Duraspark questions

[suburban99]

1980 CJ7 AMC 304 v8 with MSD distributor...

Had 2 units go south in my jeep and wondering if I have the wiring right. Is there supposed to be a resistor somewhere between the battery voltage and the spark box?

I have been buying the 12a199 from o'reilly's and maybe they are just junky?
I have been thinking of changing over to the GM HEI module.
Suggestions?

 

[dalefan88]

I would buy a msd street fire or summit racing box. I have work in part stores for 11 years and the china modules never hold up on our jeeps.


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[gert]

Got rid of mine and went HEI much cleaner look, according to my 82/83 manual the 2 pin connector off the ECM has the 13A red w/TR-10 it has a 1.35ohm resistor spliced in going to the hot side of the coil

 

[suburban99]

Checked the wiring diagram I had posted on the wall of my garage...duh.
It has a resistor on the coil between the Duraspark and and the coil. But I believe it is resistor wire, not the old time dodge style. I had to re-wire jeep when I bought it as wiring harness was fried.

I think I will covert to GM HEI I am pretty sure they want the full 12 volts...

 

[gert]

Yes you are correct it is a wire not the Dodge style Ballast, Autozone and Orielly"s sells replacement resistor wires in their help me section