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Old 11-28-2009, 06:40 PM
72 grabber 51F-1 65 chevystang
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hei question

I was wondering how how wired up a factory gm hei distributor. I have heard they just need a hot wire but I am not sure. I would prefer to run this over a points distributor

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Old 11-28-2009, 06:47 PM
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On my 70 Nova and the couple old trucks I've had,I ran an 8 gauge wire to the pink hot wire on the ign switch.If you're wiring this in a Ford, I don't know which one is your hot wire and you will have to look in a service manual or use a tester.You will only have 12v when the car is running and no probs
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Old 11-28-2009, 07:44 PM
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All I know is get rid of any resistor wire that may have gone to your coil.

Next, an un-fused ignition switched B+ wire goes to the BAT terminal on the HEI distributor.

You may have to splice in an additional wire to the B+ distributor terminal that is hot during cranking (a wire from the resistor terminal on your remote solenoid), if your main ignition switch doesn't do that for you. My old '57 chevy had this issue. It had IGN1 and IGN2 switch terminals.

Sometimes there is a "feedback" problem that prevents the engine from stopping because current from the alternator has a path back to the ignition switch.

If you have a little generator idiot lamp in the circuit, you are spared this aggravation. If not, you may need to install a diode (#276-1661) from rat shack. Solder it in series anywhere between the alternator's #1 terminal and it's termination at your ignition switch (IGN1). Orient the painted stripe on the diode toward the alternator's side of the circuit.

If you have an IGN2 terminal on your ignition switch, I also install another diode somewhere between the switch's IGN2 terminal and it's termination at the IGN1 splice at the distributor.

Some people just solder a diode between the IGN1 and IGN2 terminals at the ignition switch (solder the diode with it's stripe closest to the IGN1 terminal). Then you can forget all about having an IGN2 terminal on your ignition switch.

Mark Hamilton at madelectrical.com has kits and excellent explanations for all these issues.
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Old 12-01-2009, 04:59 PM
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one hot wire is all to ign unfused use an inline fuse

easy simple done cake walk

dont use the original small cloth wrapped wire anymore, and the yellow wire from starter to coil do away with this also
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Old 12-01-2009, 06:04 PM
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Be sure you are not using the original resistance wire. You need a properly sized copper wire to that HEI unit.

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