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post #1 of 19 (permalink) Old 07-06-2011, 06:55 PM Thread Starter
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Wiring Question

I figured I should start another thread for this...
Well, I've decided to redo my rear wiring harness and so far everything's pretty simple, but I've hit a bump when it comes to my integrated tail lights.

I tried to clean it up as much as possible, but it's really just a gaggle of wires back there. It looks like I've got two more.. umm.. relays? than on my donor harness:


I think they're hooked up two these three harnesses, but I'm not sure:


I think these are ebay dealies, but I'm not sure. Everything else with this harness is pretty much a bunch of unplugging, unrouting, re-routing and re-plugging but I dunno what I'm supposed to do with these extra relays and the wiring for the tail lights.
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post #2 of 19 (permalink) Old 07-06-2011, 07:48 PM
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Those blue and white plugs I think are stock in the harness. I also have them but while yours are plugged into something, mine are not. I just checked the wiring diagram and I think the brown and green one is a service check connector. I can only see the green wire on the other plug.
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post #3 of 19 (permalink) Old 07-06-2011, 08:04 PM Thread Starter
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Man, this tail light wiring has me all messed up. Anyone ever wire up an integrated tail light and have to add an extra relay? I figured out one of the "extra" relays, but there's one relay that looks like it has a 4-prong harness that has a black wire merged with another relay harness. I wanted to avoid hacking and slashing into this harness, but I guess I gotta do it.
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post #4 of 19 (permalink) Old 07-06-2011, 08:52 PM
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You can download the service manuals.....


http://www.rc51.info/RC-51/namshub/V...g_diagram1.pdf

"...Loctite -- or kiss your nuts goodbye..."
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post #5 of 19 (permalink) Old 07-06-2011, 09:00 PM Thread Starter
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Yeah, I tried reading through the wiring diagram and the part about the tail light. None of it really helped me.
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post #6 of 19 (permalink) Old 07-06-2011, 11:03 PM Thread Starter
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Will If I can find an equivalent 12V relay that's in a 3 prong configuration, would it make any difference? I've finished plugging everything up besides the tail light stuff and everything seems to be running okay.

I know this might be asking a bit much, but if any of you happen to have your tail/seat off, could you take a quick picture of the wiring you have going on under there from random angles? The wiring diagram in the service manual is a bit... overwhelming.

Last edited by raylee; 07-06-2011 at 11:13 PM.
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post #7 of 19 (permalink) Old 07-06-2011, 11:20 PM
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The light blue and orange connectors are to your turn signals.
The white connector might be one of the two tail light connectors. Though hard to tell.

Both while tail light connectors have a black light bulb mount that connects to them and snaps into the fender (which is cut away for the undertail). Then the bulbs are inserted into those mounts.
I kept one white connector and sacrificed the other to adapt the wiring to my undertail.

The small green connector just above the bank angle switch is your service connector. It's near the battery box.

For an SP2, you have 4 relays at the rear: Fan control, bank angle sensor, turn signal, fuel cut-off.

This is why you don't trim the rear fender flush near the battery box.
You cut a square "U" on the inside of the fender, using the subframe inner rails as a guide.
You can then mount the relays to their original mount posts.

Last edited by SubSailor; 07-06-2011 at 11:27 PM.
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post #8 of 19 (permalink) Old 07-06-2011, 11:40 PM Thread Starter
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Well, it seems I might have an SP1 wiring harness in there or something because the pigtail for my fan control relay is a 3-prong instead of a 4-prong.

Anyways, thanks for the help Sub, that clears it up a bunch. You da man.
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post #9 of 19 (permalink) Old 07-08-2011, 04:57 AM
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The sp1 has no relay on the fans, it has a direct thermal switch to a single fan.
I read this thread late but the first thing I thought of was you have an SP1/sp2 harness mismatch.
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post #10 of 19 (permalink) Old 07-08-2011, 05:21 PM Thread Starter
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I think the previous owner had an extra relay hooked up. Now I just have to wait for my PCIIIusb and I'm good to go! Even got the tail lights figured out! Woot!
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