3rd Generation Specific (1993-2002) 1993-2002 Discussion including performance modifications and Technical Support Sections.

93/94 front harness help

Old 08-13-18, 09:08 PM
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93/94 front harness help




Long story short, driving home on a nice hot day and I seen a 5 degree jump in temp on the pfc, followed by a nice burning smell and car losing power. Horn now goes off anytime headlight switch is turned, as well as key to power. I assumed it was something caused by the HWL headlights i installed the month prior, though not likely as they worked fine. Got it towed home and started inspecting what I also thought could be tire to harness contact (there was none) but a wire got cooked on drivers side front fender harness and pretty much melted a bunch together. Iíve thus tried to source a new or used front harness with little luck. Finally found what Iím told is the last new front harness in the country for a small fee of $2300... fine Iíll pay it to get the car back up and going, but I was then told itís for a 93, and that the 94 is discontinued. Iíve searched and canít find a definitive answer on the differences between the two, as they do have different part number. Can anyone shed some light on them for me?

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Old 08-14-18, 11:50 AM
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$2300 for a harness sounds high. Have you tried the "RX7" or "RX7 FD3S Only / Parts & Cars For Sale" groups on Facebook? There is someone selling one for $300 on the RX7 group as of this morning. You might also try calling Bryan @ Rotorsports racing in Kannapolis, NC. I'm taking my car to him tomorrow for some work but I remember him telling me he knows a guy who makes them.

Also try emailing Ray Crowe ([email protected]). He's supposed to be the man for getting OEM parts and I bet he can tell you if there is a difference in part or part number. Atkins Rotary also shows they have them: https://www.atkinsrotary.com/store/E...iring-Harness/
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Old 08-14-18, 03:21 PM
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Yeah Iíve posted to fb groups and have only had people respond with hacked up ones or rhd ones. $2300 is high, but thatís also a brand new harness so I expected as much. From what Iíve found, Mazda has discontinued the harness and nobody has one. If you see that harness again, pm me a link if you donít mind. Atkins link you posted is for engine harness, I need the front harness (pink harness in pic above) on a side note, theyíre the ones who ordered me the front harness which happened to be last in the county but is for a 93. Josh Cook at Atkins said 93/94 have different part numbers

Last edited by crackerskid; 08-14-18 at 03:24 PM.
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Old 08-14-18, 03:29 PM
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You should be able to fix that harness. Most likely there are just a few wires that rubbed through and are shorting on each other.

It's not the most fun thing to do but it beats trying to remove that harness (which is a big job) and finding a good replacement. Most likely you would need a '94 harness if you have a '94 due to the passenger air bag.

Many people have had the harness rub through and have been able to fix the wiring, insulate the wiring, and zip tie it up high so it doesn't rub through again.

I'd at least spend a good afternoon on the project before just trying to replace the whole thing.

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Old 08-14-18, 03:39 PM
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Iíve condidered this option, though the hardest part is done haha I removed the harness the following afternoon. Besides an airbag light being on, is that the only difference between the two?
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Old 08-24-18, 01:25 PM
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Well after much thought, and lack of any usernames ones available, I just ordered a new one from Atkins yesterday. Itís for a 93, fd01-67-010j. Iím hoping that airbag is the only variance between the two and it works. Does anyone else think or know of any other variances in the 93/94? Or if this will in fact be plug and play?
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Old 08-30-18, 05:13 PM
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Man, I have mine pulled right now, I would've just repaired it instead of buying a new one. Would be a great time to do other work. You could probably just repurpose a lot of the wires in there like the radio relay and air pump relay etc... I'd give it a good thinking and you may be able to return the one to Atkins and repair what you have like Dale said

There's a lot, I mean a lot, of wires in that thing that can be re-pinned for what you need, just may take some time and a lot of attention to detail about what's good and what isn't.
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Old 02-05-19, 09:39 PM
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Bumping this up - is anyone aware of actual differences between 93 & 94/95 with the front harness?

Originally Posted by crackerskid View Post
Well after much thought, and lack of any usernames ones available, I just ordered a new one from Atkins yesterday. Itís for a 93, fd01-67-010j. Iím hoping that airbag is the only variance between the two and it works. Does anyone else think or know of any other variances in the 93/94? Or if this will in fact be plug and play?
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Old 02-12-19, 03:17 AM
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I haven't had to compare front harnesses personally, but if I did, I think I would start by comparing ECU pinout terminals 1A->1V and 2A->2L, (22 + 12 pin front harness to ECU yellow connectors)
in 1993 + 1994 Body Electrical wiring diagrams, side by side. Pinouts start at page Z-35 in both PDFs
The other end of the front harness terminates at the joint box, which is the same for both years.

If both harnesses are out of the car, it might be easier to visually compare connectors + wire colors and check using a multitester, if unsure of similarities at any point, or if different wire colors were used.

Last edited by Blk 93; 02-12-19 at 03:23 AM.
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