Question about Cars & Trucks
Kinda hard to post a hand drawing, but basically the wire to the the distributor comes from the coil terminal that has only one wire (unless it also has a noise suppression capacitor. The other side of the coil has two wires, one goes to the ignition switch "on", and the other wire goes to the starter "start" terminal. This is done so that full 12 volts go to the coil when cranking (so that the spark to the plugs is higher voltage and jumps the plug gap better for starting, and because the wire going to the ignition switch has a resistance section that reduces the voltage and we know from ohms law that when the voltage is reduced, the amperage increases, thus causing a fatter spark to assist in fuel mileage and cleaner burn. I bet you can do a search for basic car ignition circuit in 1970.
Posted on Mar 03, 2018
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 tach terminal also.
Thats it you just plug the three wire pigtail from the dist. base(pickup) to the cap and you are off.
Remember firing order is 18436572 in a clockwise direction. to find #1 remove #1 plug and have someone"bump" the engine over while holding your finger over the hole-carefull. then line up the slotted mark on the crank pulley with the big notch on the timing indicator. Good luck
Posted on Aug 31, 2008
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