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Sohc wiring question

312 Views 5 Replies 4 Participants Last post by  Guardians3000GT
Some rats were chewing on some coil pack wires and I have a question.

I was experiencing spark related driving problems a few days ago and decided todo a tune up and when it came time to swap to a new coil pack I noticed some rats had helped themselves to the wires (in the past AND recent past) I was building myself a new harness when I noticed I have a disconnected wire and no idea if this wire was disconnected when I had the car running good a week ago.

The wire in question goes to what looks like a capacitor and maybe an igniter. It is Part of the MALE end of a plug. The capacitor and other business are connected to the FEMALE side of the plug.

The wire in question is bright green with a white stripe. This gives me a clue.

The wire in question, when "plugged in" connects to a brown wire leaving one of the electrical doo-hickeys. That doo-hickey has two wires coming out of it. A black one and that brown one I was just talking about.

Based on those clues, I'm hypothesizing, that this lone disconnected wire MIGHT be a ground.

Please look at the pictures and send me ANY feedback or trolls.

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The wire in question goes to what looks like a capacitor and maybe an igniter. It is Part of the MALE end of a plug. The capacitor and other business are connected to the FEMALE side of the plug.

The wire in question is bright green with a white stripe. This gives me a clue.

The wire in question, when "plugged in" connects to a brown wire leaving one of the electrical doo-hickeys. That doo-hickey has two wires coming out of it. A black one and that brown one I was just talking about.

Based on those clues, I'm hypothesizing, that this lone disconnected wire MIGHT be a ground.
Not sure what year you’re SOHC car is, but I only have electrical prints for ’92-’94 SOHC cars and a Green/white wire nor a Brown wire are shown. However the circuit is the same and as you can see from below print, that “doo-hickey has two wires coming out of it” is actually a noise filter. It is to suppress radio static which the capacitor also helps to do but it might also help smooth out spikes in voltage to coil :unsure:. If the brown wires where originally white before they browned from age, then the below print might be correct with wire colors. The Green/wire wire in your pictures might have been installed at some point to replace a bad wire, also the loose end you’re referring to looks to be just shielding for that wire which would have been hooked to ground from shielding of a normally white wire that would have run to TCU of a automatic trans cars (see highlighted in below print).

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