Wiring diagram for hei distributor

Switch from an old breaker-point ignition to a high-energy ignition (hei) a breeze with the one-wire hook-up; 65,000 volt coil provides hot spark for maximum performance using solid brass terminals; High quality cnc aluminum body provides years of trouble-free operation; Fully compatible with flat tappet and hydraulic roller cams

6. Connect the BLACK wire of the 8782 to ground. GM HEI, EXTERNAL COIL 1. Install the s upplied harness, PN 5 4701, to the Timing Control then locate the ignition coil. 2. Splice the RED wire of the harness into the PINK wire coming from the BLACK connector of the coil (Figure 10). Figure 10 Wiring the GM HEI External Coil. 3. Locate the WHITE ...Apr 16, 2020 · We prefer to set the initial timing for most engines at 10 degrees Before Top Dead Center (BTDC). With that set, remove the cap from the distributor. We’re using a Summit HEI distributor. We use a black Sharpie to place a mark on the distributor body where we want the Number One spark plug wire to be located. Testing the pickup. When checking for 12 volts, do so while you are cranking the engine. If the battery voltage drops below 10.5 volts while cranking, you probably have a bad battery. This low voltage could be insufficient to get the distributor to fire. Use a volt meter to test the hot wire while a buddy cranks the engine over.MSD IGNITION • www.msdignition.com • (915) 857-5200 • FAX (915) 857-3344 Figure 4 Wiring to a GM HEI Distributor, using the Module. Figure 5 Wiring to a GM HEI Distributor using the Magnetic Pickup. Note: The GM Unitized Coil, HEI Distributor was produced with several different modules. Make up a 12 gauge wire with an in-line 20 amp fuse. Connect that wire from the ignition switch directly to the BAT position on the HEI. You do not have to connect anything to the TACH position, but if you want a tach, most semi-modern tachs (like my Sun Super Tach III) work just fine when connected to the TACH output.May 9, 2022 · The following steps should be used to properly install the Chevy TBI and HEI distributor wiring system: Disconnect the battery and remove the negative cable to ensure safety. Remove the old wiring system for the existing engine. Install the new wiring harness for the TBI and HEI distributor. Mount the ignition coil, spark plugs and wires. Oct 22, 2017 · It shows the placement of all the elements and connections that make up the system. Wiring diagrams are essential for any car owner to understand, because they provide a blueprint for what needs to be done and how to go about it. Using the Chevy 350 Hei Distributor Wiring Diagram to Troubleshoot The Chevy 350 Hei Distributor Wiring Diagram can ...

Run a 16ga wire from this one to any decent ground. #86 is your trigger feed. This one needs a 16ga wire that's live when (and only when) the ignition is switched on. #87 is your power output. Connect this via a 14ga wire to the coil + and then from there to the module's power terminal.0:00 / 10:51 GM HEI electronic distributor how to wire and run install DIY Craft Customs 76.8K subscribers 680K views 7 years ago all my videos are in 1080p so check that out just an idea on...Dec 11, 2017 · Testing the pickup. When checking for 12 volts, do so while you are cranking the engine. If the battery voltage drops below 10.5 volts while cranking, you probably have a bad battery. This low voltage could be insufficient to get the distributor to fire. Use a volt meter to test the hot wire while a buddy cranks the engine over. Terminator Ignition Wiring Without CD Box (GM Distributor Shown) A couple notes about the diagram above. Shown is the GM small cap HEI distributor installation. See the Terminator instruction manual for Ford TFI example. Signals A-K represent the 10-pin ignition connector on the Terminator main harness.0:00 / 10:51 GM HEI electronic distributor how to wire and run install DIY Craft Customs 76.8K subscribers 680K views 7 years ago all my videos are in 1080p so check that out just an idea on...Feb 14, 2016 · 39 master · #3 · Feb 14, 2016. Hei wiring. To wire an HEI just go from the ignition side of the key switch directly to the HEI. There are two terminals one marked IGN and the other TAC. Wires coming out of the HEI body plug into the cap also. The ignition wire should be at least a #14.

Show transcript. American Autowire. 38.7K subscribers. Videos. About. Craig Darpino from American Autowire shows how to properly wire an HEI distributer. Feb 14, 2016 · 39 master · #3 · Feb 14, 2016. Hei wiring. To wire an HEI just go from the ignition side of the key switch directly to the HEI. There are two terminals one marked IGN and the other TAC. Wires coming out of the HEI body plug into the cap also. The ignition wire should be at least a #14. The 7 Pin HEI Module. With a GM HEI 7-pin (and 8-pin modules), the ignition module wires you need to know about are: tach signal is a purple wire with a white trace [ pin R ] advance control signal is a white wire [ pin E ] override (cranking) signal is a tan wire with a black trace [ pin B ] ground is a black wire with a red trace [grounded to ...A single 12-volt wire is all that is required to function, and it can be easily stabbed into any distributor-fired Chevrolet engine. It’s a staple among hot rodders. GM’s HEI distributor was envisioned and ultimately built by the Delco-Remy Division of General Motors and found its way into production vehicles starting in 1974.

Parole office mcallen tx.

A properly functioning wiring diagram will show you which wires are in good condition and which need to be replaced. This allows you to make sure your engine is running safely and efficiently. Finally, a Chevy 350 Hei Distributor Wiring Diagram is also great for adding new components to your vehicle. You can easily see which wires will need to ...Video showing the proper way to install an HEI distributor. This really cleans up the plug wiring and the position of the distributor housing makes for a nic...Ignition Control to a GM HEI Distributor that uses a 5-pin or 7-pin module (Figure 1). Most of these distributors DO NOT have a vacuum advance. Note: On HEI distributors with a 4-pin module, this Harness cannot be used. 1. Disconnect the 12 volt key connector, the 3-wire connector coming out of the distributor and the Tach Connector (if ...6. Connect the BLACK wire of the 8782 to ground. GM HEI, EXTERNAL COIL 1. Install the s upplied harness, PN 5 4701, to the Timing Control then locate the ignition coil. 2. Splice the RED wire of the harness into the PINK wire coming from the BLACK connector of the coil (Figure 10). Figure 10 Wiring the GM HEI External Coil. 3. Locate the WHITE ...To view free diagrams for E-Z Go golf carts, visit VintageGolfCartParts.com or BlockbusterGolfCarts.com. Both websites offer wiring diagrams for the electrical system, charger, speed controller and steering assembly.

7 កក្កដា 2017 ... I can only see the left half of the wiring diagram. It sounds like a very ... distributor off ebay that's a GM HEI one wire connection no issues.GM HEI distributor wiring diagrams are an essential tool for any automobile enthusiast. They provide a clear visual representation of the electrical systems in a vehicle, allowing for an easier diagnosis and repair. Whether you're a novice or a seasoned mechanic, having a reliable diagram is essential for any automotive repair job. How to Read […]Oct 22, 2017 · When studying a spark plug wiring diagram for your Chevy 350 Hei engine, you need to understand the different components of the diagram. The most important components include: Ignition Coil: This is a type of transformer that converts low-voltage electrical current into high-voltage electrical current. Spark Plugs: These are the actual plugs ... 11/02 0017-004400 DISTRIBUTOR INSTALLATION Disconnect the Flame-Thrower wire harness from the distributor cap. Remove the cap from the distributor housing. Install the distributor gasket over the gear, and up to the distributor collar. (gasket not required on Oldsmobile and Ford applications).Doing the swap to HEI distributor slowly. I was wondering if I could do the wiring like I have in the diagram. Remove the 2 wires from the ...FORD IGNITIONS Wiring a Ford DuraSpark using White Wire Trigger. COIL TO GRAY TACH WWW.STREET-FIRE.COM PN 5520 MULTI-SPARK N ® SMALL RED GM IGNITIONS Wiring an HEI 5 or 7-pin Module (Amplifier Trigger). TO GRAY TACH WWW.STREET-FIRE.COM PN 5520 I MULTI-SPARK N ® NOTE: Some 5-pin models may experience a • Magnetic pickup distributor • Crank trigger system • Points distributor INSTALLATION INSTRUCTIONS for HI-6 CD IGNITION WITH REV LIMITER AND TIMING RETARD Part Numbers 6000-6400,6000-6420,6000-6421,6000-6422, 6000-6423,6000-6424,6000-6425,6000-6466 CAUTION:READ INSTRUCTIONS CAREFULLY BEFORE STARTING INSTALLATION. READ THIS BEFORE YOU BEGIN!Detailed how to guide on installing an MSD 6AL with an HEI distributor.Link to MSD 6AL: http://amzn.to/2mf4uFoI got my rebate! Just took almost 3 months.

Now, plug the 3 pin distributor connector into the 3 pin connector on the provided wiring harness (Figure 5). Figure 5 10. Next, terminate the Pink switched 12v wire on the 3 pin distributor wiring harness, to the clean switched 12v ignition source that you labeled earlier.

Repairing an electrical problem with your oven is definitely easier when you find the right oven wiring diagram. Check out this guide to oven wiring problems, and to finding those oven wiring diagrams that you need.I was surprised how cheap it was to buy an HEI for this Ford 302. Came with the coil and control module so all you have to do is give it 12V. Here is the o...The heavy red wire comes directly from the battery and the second heavy red wire goes to the distributor. The Black wire is the ground. The one spade on the relay that's blank in the pic ended up with keyed 12V. That's the wire that activates the relay. When activated, the relay provides 14V to the HEI.Run the pink coil positive (55) wire to either the battery side of a GM HEI distributor or the ballast resistor on a points style distributor. If you’re using an aftermarket ignition modules please follow its instructions for specific directions Run the purple tachometer (45) wire to the tach terminal on a GM HEI distributor, the negative11/02 0017-004400 DISTRIBUTOR INSTALLATION Disconnect the Flame-Thrower wire harness from the distributor cap. Remove the cap from the distributor housing. Install the distributor gasket over the gear, and up to the distributor collar. (gasket not required on Oldsmobile and Ford applications).Chevy 327 350 400 Red Small Hei Distributor 50k Volt Coil Spark Plug Wires Under Exhaust Swapmeetparts. Trouble Shooting Rebuilding Hei Ignitions Grumpys Performance Garage. Camaro 1975 454 6 Sd From Finland Page 13 Nastyz28 Com. General Motors 7 Pin Hei Ignition Control. Gm Hei Ignition Distributor Wiring Diagrams And Guide6. Connect the BLACK wire of the 8782 to ground. GM HEI, EXTERNAL COIL 1. Install the s upplied harness, PN 5 4701, to the Timing Control then locate the ignition coil. 2. Splice the RED wire of the harness into the PINK wire coming from the BLACK connector of the coil (Figure 10). Figure 10 Wiring the GM HEI External Coil. 3. Locate the WHITE ...

Long lot survey system.

Hemohim amazon.

The HEI distributor is an inductive-discharge-style ignition, but with the points replaced by a solid-state switching device called an electronic ignition-control module. The module works...I was surprised how cheap it was to buy an HEI for this Ford 302. Came with the coil and control module so all you have to do is give it 12V. Here is the o...6. Connect the BLACK wire of the 8782 to ground. GM HEI, EXTERNAL COIL 1. Install the s upplied harness, PN 5 4701, to the Timing Control then locate the ignition coil. 2. Splice the RED wire of the harness into the PINK wire coming from the BLACK connector of the coil (Figure 10). Figure 10 Wiring the GM HEI External Coil. 3. Locate the WHITE ... Feb 23, 2022 · A single 12-volt wire is all that is required to function, and it can be easily stabbed into any distributor-fired Chevrolet engine. It’s a staple among hot rodders. GM’s HEI distributor was envisioned and ultimately built by the Delco-Remy Division of General Motors and found its way into production vehicles starting in 1974. Oct 29, 2012 · 2. Using the diagram above, wire up the main power and ground wires. Start with the power cable from the battery. Use a single 10 gauge strand. Attach an eyelet to one end (or however you'd like to connect to the battery) and a spade connector to the other to connect to the relay. Somewhere near the battery cut the wire and solder in the 30amp ... FORD IGNITIONS Wiring a Ford DuraSpark using White Wire Trigger. COIL TO GRAY TACH WWW.STREET-FIRE.COM PN 5520 MULTI-SPARK N ® SMALL RED GM IGNITIONS Wiring an HEI 5 or 7-pin Module (Amplifier Trigger). TO GRAY TACH WWW.STREET-FIRE.COM PN 5520 I MULTI-SPARK N ® NOTE: Some 5-pin models may experience a If your new, this mod may seem way over your head, but dont stress its quite easy. The HEI mod is effectively using a well known, reliable and inexpensive ignition module from a different vehicle. In this case its the GM HEI ( High Energy Ignition) module that’s been used on old GM V8 engines since the 70’s.Aug 21, 2017 · 9. Position and tighten the hold down clamp onto the distributor. 10. Install the distributor cap and spark plug wires one at a time to ensure correct location. 11. Connect a switched 14-gauge wire from a 12 volt source to the B+ terminal of the Distributor Cap (Figure 2). (Be sure the 3-pin connector from the module is connected to the cap). 12. 11/02 0017-004400 DISTRIBUTOR INSTALLATION Disconnect the Flame-Thrower wire harness from the distributor cap. Remove the cap from the distributor housing. Install the distributor gasket over the gear, and up to the distributor collar. (gasket not required on Oldsmobile and Ford applications).We prefer to set the initial timing for most engines at 10 degrees Before Top Dead Center (BTDC). With that set, remove the cap from the distributor. We’re using a Summit HEI distributor. We use a black Sharpie to place a mark on the distributor body where we want the Number One spark plug wire to be located.Figure 3 Primary Wiring to an Accel BEI Distributor. Figure 4 Primary Wiring to a Mallory Unilite Distributor. NOTE: ALL 3-WIRE MALLORY DISTRIBUTORS CONNECT THIS WAY. GM HeI DIStRIButoR The 7AL-3 can be wired to the GM HEI Distributor. You must identify which module your distributor has to determine which wiring diagram to use. ….

Has anyone had experience hooking up an HEI distributor with a shift interrupter switch. Have been studying the Mercruiser manual and this is what I have come up with: On some of the wiring diagrams (regular distributor and coil) the negative terminal which serves as the tach signal is also routed to the shift interrupter, I'm assuming that when shifting forward/reverse the switch temporarily ...Run the pink coil positive (55) wire to either the battery side of a GM HEI distributor or the ballast resistor on a points style distributor. If you’re using an aftermarket ignition modules please follow its instructions for specific directions Run the purple tachometer (45) wire to the tach terminal on a GM HEI distributor, the negativeWhen converting from a points-style distributor to an HEI unit on most 1970-and-earlier vehicles, it’s a good idea to run a new 12-gauge wire from the BAT terminal in the HEI distributor cap ...19 ធ្នូ 2021 ... Now introduce electronic and HEI distributors where grounding out the coil or distributor ... wiring diagram and connecting the relay to switched ...1 – HEI distributor rotor 1 – HEI wire retainer 1 – HEI vacuum advance canister (adjustable) with Allen wrench 1 – Set of HEI mechanical advance weights, E-clips, pivot pin washers 1 – HEI 4-pin module, wiring harness and packet of white thermal grease 3 – Sets of mechanical advance springs (HD silver, medium blue, LT silver) The General Motors GM radio wire harness uses gray, orange, yellow, pink and black colors. The color scheme is generally standard for vehicles of every year.May 29, 2015 · Tools: standard wrench set, flat-blade and/or Phillips screwdriver, wire strippers/crimpers Cost: varies by manufacturer- approximately $175-$400 Tinware: HEI distributor (new, rebuilt, or used), HEI ignition lead connector, HEI style plug wires Tip: Label or mark the location of your spark plug wires on the distributor cap for fast, easy ... Run the pink coil positive (55) wire to either the battery side of a GM HEI distributor or the ballast resistor on a points style distributor. If you’re using an aftermarket ignition modules please follow its instructions for specific directions Run the purple tachometer (45) wire to the tach terminal on a GM HEI distributor, the negativeJul 7, 2019 · I also removed the resistor wire that was connected to the coil from the bulkhead connector, and replaced it with a 12-gauge wire (This will be the power for my HEI). Note: I checked the wiring diagram and determined that this pin on the bulkhead connector ties into the ignition switch (12-P wire from the bulkhead on the factory wiring diagram ... INSTALLATION INSTRUCTIONS (Read fully before starting installation!) Congratulations, you just purchased a 1-wire hook up distributor for your Ford®, which eliminates all the clutter. Also you have the finest electronic components for better performance. NOTE: If you have a roller cam, you must use bronze gear. Wiring diagram for hei distributor, Oct 14, 2021 · I was surprised how cheap it was to buy an HEI for this Ford 302. Came with the coil and control module so all you have to do is give it 12V. Here is the o... , Make sure they are correct. Also make sure you hook your IGN1 (dark blue) and IGN2 (brown) together where they used to be on the ballast. In fact, you can just hook everything on the ballast together, leave the original coil + wire connected, and add the HEI as shown., Re: HEI Distributor Wiring. Simplest way to do this is pull wire that was on the original distributor out of the wrap down to the fuse block. Leave yourself enough wire to splice onto it. Then run new wire back to HEI. The original wire was a resistor wire but it wasn't the whole length of the wire., This wire is in an original points ignition system harness to provide 12 volts to the coil during starter cranking. You do not need this wire with the breakerless, although it can stay hooked up without causing a problem. . You will need to split the 12v"+" that feeds the breakerless to also feed the coil., GM HEI electronic distributor how to wire and run install DIY. Craft Customs. 76.8K subscribers. 680K views 7 years ago. all my videos are in 1080p so check that out just an idea on how the..., 1 - 11 of 11 Posts. The Big Al Premium Member · #2 · Jul 29, 2011. 14GA wire for HEI is fine. The "R" terminal from the starter needs to tap into the power wire to the HEI. I have found on older Chevy II there is no power to ignition when switch is in the start position. So the bypass must be used. Al., 9. Position and tighten the hold down clamp onto the distributor. 10. Install the distributor cap and spark plug wires one at a time to ensure correct location. 11. Connect a switched 14-gauge wire from a 12 volt source to the B+ terminal of the Distributor Cap (Figure 2). (Be sure the 3-pin connector from the module is connected to the cap). 12., Now, plug the 3 pin distributor connector into the 3 pin connector on the provided wiring harness (Figure 5). Figure 5 10. Next, terminate the Pink switched 12v wire on the 3 pin distributor wiring harness, to the clean switched 12v ignition source that you labeled earlier., 19 ធ្នូ 2021 ... Now introduce electronic and HEI distributors where grounding out the coil or distributor ... wiring diagram and connecting the relay to switched ..., Figure 3 Primary Wiring to an Accel BEI Distributor. Figure 4 Primary Wiring to a Mallory Unilite Distributor. NOTE: ALL 3-WIRE MALLORY DISTRIBUTORS CONNECT THIS WAY. GM HeI DIStRIButoR The 7AL-3 can be wired to the GM HEI Distributor. You must identify which module your distributor has to determine which wiring diagram to use., The first diagram shows a typical stock points system. The second diagram shows where the wires go when converting to HEI. Note that the new HEI power wire can be connected to the bulkhead connector as described in the above paragraph, or it can be routed to the "IGN" terminal found on most fuse panels. Wiring for Typical Points Ignition System ... , Now, plug the 3 pin distributor connector into the 3 pin connector on the provided wiring harness (Figure 5). Figure 5 10. Next, terminate the Pink switched 12v wire on the 3 pin distributor wiring harness, to the clean switched 12v ignition source that you labeled earlier., May 26, 2022 · A properly functioning wiring diagram will show you which wires are in good condition and which need to be replaced. This allows you to make sure your engine is running safely and efficiently. Finally, a Chevy 350 Hei Distributor Wiring Diagram is also great for adding new components to your vehicle. You can easily see which wires will need to ... , I purchased a Procomp Electronics 6001D HEI to replace the Accel 41000. A diagram at KMJ Performance and talking with a Procomp tech, the voltage comes from the ignition. The below diagram shows a 20gauge ignition wire goes to the + post of the coil (which the HEI does away with) then to the "R" terminal on the starter solenoid., GM HEI distributor wiring diagrams are an essential tool for any automobile enthusiast. They provide a clear visual representation of the electrical systems in a vehicle, allowing for an easier diagnosis and repair. Whether you're a novice or a seasoned mechanic, having a reliable diagram is essential for any automotive repair job. How to Read […], Show transcript. American Autowire. 38.7K subscribers. Videos. About. Craig Darpino from American Autowire shows how to properly wire an HEI distributer., The wire from the distributor goes to the "-" termi-nal on the coil. There may be an additional capacitor on the coil - terminal. This is to eliminate radio interference. Notes on wiring for an "HEI" distributor with the coil in the cap; If you are converting from a points type distributor, you have to make sure that the "resistance" power , SOURCE: need wireing diagram to change 72 nova over to hei distributor. Hey , just take the positive wire from the coil you are removing and feed it to the + terminal on the HEI dist. cap.the other terminal under there is for your tachometer. If you are mounting a master kill switch in the bumper for drag racing- attatch the kill wire to the ..., To view free diagrams for E-Z Go golf carts, visit VintageGolfCartParts.com or BlockbusterGolfCarts.com. Both websites offer wiring diagrams for the electrical system, charger, speed controller and steering assembly., Now, plug the 3 pin distributor connector into the 3 pin connector on the provided wiring harness (Figure 5). Figure 5 10. Next, terminate the Pink switched 12v wire on the 3 pin distributor wiring harness, to the clean switched 12v ignition source that you labeled earlier., The 7 Pin HEI Module. With a GM HEI 7-pin (and 8-pin modules), the ignition module wires you need to know about are: tach signal is a purple wire with a white trace [ pin R ] advance control signal is a white wire [ pin E ] override (cranking) signal is a tan wire with a black trace [ pin B ] ground is a black wire with a red trace [grounded to ..., the distributor. 10. Install the distributor cap and spark plug wires one at a time to ensure correct location. 11. Connect a switched 14-gauge wire from a 12 volt source to the B+ terminal of the Distributor Cap (Figure 2). (Be sure the 3-pin connector from the module is connected to the cap). 12. To connect a tachometer, plug the trigger wire of, Well pretty much what the title says haha! Its really hard to do videos off the top of your head and it really shows in this one. I for get what electrical t..., Atlanta,Ga. In the top of the cap where the square portion is there are 2 terminals. The one on the right is where you put your switched hot. The other terminal on the left is the tach signal. Then the plug from the distributor goes as you can see in the rear 2 terminals. The front 2 are for your hot and tach. 1., The wire from the distributor goes to the "-" termi-nal on the coil. There may be an additional capacitor on the coil - terminal. This is to eliminate radio interference. Notes on wiring for an "HEI" distributor with the coil in the cap; If you are converting from a points type distributor, you have to make sure that the "resistance" power , The wire from the distributor goes to the "-" termi-nal on the coil. There may be an additional capacitor on the coil - terminal. This is to eliminate radio interference. Notes on wiring for an "HEI" distributor with the coil in the cap; If you are converting from a points type distributor, you have to make sure that the "resistance" power, TACH POWER FROM (GREEN) IGNITION (RED) 15050 SHOEMAKER AVE. SANTA FE SPRINGS, CA 90670 | TEL: 866 TSP 9988 | WWW.TOPSTREETPERFORMANCE.COM IF HOOKING UP TO 6AL BOX, SEE BELOW: NOTE: The GM Ignition Module and REMOVE MODULE INSTALL HARNESS CONDENSER GROMMETT GM-CABLE HARNESS JM6917 JM6934 WIRE CLAMPS, On my '74 390, there is a short wire with connector just floating in the air, a tachometer can be connected to it. The module pulses this wire to ground to create the spark. I think you can guess where the 3rd, all black wire on the coil goes. ;-) A google for "ford hei distributor wiring" images came up with a bunch of hits., Sep 7, 2016 · 258 HEI Install. This is a "how-to" thread for installing an HEI distributor on your AMC 258. This was completed on a 1985 Base model so your components may vary depending on year. Other things to note, I have a Weber 38 DGES installed and have previously half-nutter bypassed my motor. , Figure 6 Primary Wiring to a GM HEI with a 4-Pin Module (Magnetic Pickup Trigger). GM HEI DISTRIBUTOR The 7AL-3 can be wired to the GM HEI Distributor. You must identify which module your distributor has to determine which wiring diagram to use. Count the number of pins or terminals on the module and follow the diagram for a 4-pin or 7-pin ..., The second diagram shows where the wires go when converting to HEI. Note that the new HEI power wire can be connected to the bulkhead connector as described in the above paragraph, or it can be routed to the "IGN" terminal found on most fuse panels. Wiring for Typical Points Ignition System. Wiring for Typical HEI Ignition System:, 9. Position and tighten the hold down clamp onto the distributor. 10. Install the distributor cap and spark plug wires one at a time to ensure correct location. 11. Connect a switched 14-gauge wire from a 12 volt source to the B+ terminal of the Distributor Cap (Figure 2). (Be sure the 3-pin connector from the module is connected to the cap). 12., wiring or a ballast resistor in the coil positive (+) wiring. This reduces the voltage at the coil positive terminal. An MSD Ready-to-Run Distributor requires a solid 12 volts to perform at its full potential. By adding a Relay, PN 8961, you can ensure that the distributor receives a full 12 volts during cranking and while running. The diagram ...