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I have a early 90’s engine/pcm harness from a Mustang I think using it for a MAS conversion it has a smog delete.
My question is about power connection for the distributor, fuel pump and the PCM all go through a relays and have fuse wire and tied to the battery side of the solenoid (a brown/orange a green and a yellow)they hook up to their relays, but I am not sure that it correct terminals do they go to terminal 87 or 30?
And if hooked up wrong did I cook my pcm
Not enough info to say...you will need a schematic from the donor car's service manual to answer your question. In general terms, the leads on the coil terminals are not polarity sensitive nor are the wiper/contacts...that said, within the wiring harness you may find that there are other leads that force the polarity in one direction or the other.
Not enough info to say...you will need a schematic from the donor car's service manual to answer your question. In general terms, the leads on the coil terminals are not polarity sensitive nor are the wiper/contacts...that said, within the wiring harness you may find that there are other leads that force the polarity in one direction or the other.
You are correct Charlie I don’t know if there are diodes or what ever in the lines and I forgot to thank you Charlie
Last edited by schoo; Sep 21, 2019 at 10:27 AM.
Reason: For got thank you
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