Main wiring harness question
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Main wiring harness question
Yesterday I got a really nice wiring harness from the pick-a-part and it came out of a 93 Bronco with a manual trans and I think it was a 5.8 and not a 5.0. Before I removed it I did look it over and made sure it had the grey TFI module mounted to the fender near the PCM. The only difference I saw was a spot for 4 relays mounted to the outside of the main box where the other relays and fuses are. None of these had fuses or relays in them when I removed the harness so I am not sure what was in the extra 4.
Questions:
Thanks
Questions:
- Can someone tell me what the extra 4 relays are for so I can determine if I need them or can use them?
- I didn't buy the injector part of the harness, it had a few sensor connectors cut off and I already have this harness out of another truck. At the square connector that connects the injector and sensor harness to the rest of the PCM harness, will I need to re-pin anything or should everything line up? I think the injector harness came out of 92.
- What about the large connector that connects to the firewall NEXT TO the PCM connector? It's just a few inches towards the passenger side from the PCM and also comes off with a 10mm bolt with about 60 or 70 wires. Would I need to re-pin this or move any connections?
Thanks
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I'd like to replace my existing harness with this one because I'd like the wiring for my MASS air conversion to be neater and better in terms of splicing. So I plan on converting this harness to MASS air and install it.
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From: Ottawa, Ontario
I see. As for as wiring differences... you cannot assume there aren't any differences so you would be best advised to dig up wiring diagrams for both trucks and compare or trace each wire and generate a little spreadsheet of both harnesses.
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I probably could do this but I looked at a few harnesses on line and thought it'd be harder to adapt the mustang harness to my truck vs. what I did. So what would I need if I wanted to go this route? What mustang harness and what, if any, mods would be needed?
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Would you have any diagrams I can use as a starting point for my '92 harness? I am not finding much that will help
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