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The coil is a. Coil. Power on pos goes thru coil and show on the neg terminal. That creates a field when neg is grounded. Remove the gnd and field collapses and jumps to secondary out to plugs ( spark)




ok. I always wondered how the volage going in circles around the middle would create a charge...that makes sense though.

so if the coil is grounded, and then the ground is removed, it SHOULD fire, right? and if it doesn't then it's most likely someting broken in the coil?

I'll try that before hooking the ignition box back up to it and cranking away again to see if ti was the tach or not.


yes. but disconnect the tach cause ive seen tachs cause no start conditions before.

since the coil + to coil - is a coil of wire, there should be a resistance between them. you said it shows open (infinity) right? or was it really low like 0? if its open (infinity) then the coil is bad




it's closed, zero resistance. I didn't know if there was supposed tobe a few ohms of resistance or not.


ahhhh, ya, zero sounds wrong. id expect some resistance. to know what the resistance should be, you'll have to go to the msd site and see if they list it. else you could call them on monday or swap in a different coil.

shouldnt you be running a ballast resister with that coil?