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Old 02-23-2014, 04:53 PM   #1
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Poison Spyder LED License Plate & 3rd Brake Light

I have been struggling with how to run the wiring for the Poison Spyder hardware on my JK RockBrawler Rear Bumper w/Tire Carrier. Can some provide me a picture of how they ran the harness into the tub?

Any comments on wiring would be greatly appreciated also. I have read a couple different ways and maybe that is what is giving me troubles.

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Old 02-23-2014, 06:27 PM   #2
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I ended up drilling a hole under the break light to get a cable out, then used zip ties to secure it. i will snap some pictures later...to ilustrate.

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Old 02-23-2014, 08:51 PM   #3
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Used a 4 pin trailer harness at spare tire so i could remove tire and lic plate. Then ran wire on carrier to under body and up to tie in to brake and stop light. Well I didn't run the wire on the carrier and to the tail light, PSC did, I just hooked up the trailer 4 pin and moved the plate to the tire from the left side of the carrier.
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Old 02-23-2014, 10:38 PM   #4
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I tried to install mine today and had problems as well. Glad u started this thread.

My question is, shouldn't I be able to extend the wires from the original license plate light (2 wires) to the new PS unit (three wires) and run the wires from the original third brake light(2 wires) the the PS unit? Put the 3 grounds together and then the designated wire to each of the license plate light and the brake light. I tried this and it's not working. I blew a 15amp fuse in the process so I screwed up somewhere. I did have the 3rd brake light working at one point with out the license plate light wires connected. Don't have wires connected wrong? For the wires coming from the jeep, how do I know which is power and ground on the license plate light wires? They are both white and purple. The original 3rd brake light wires are one black wire and one white wire.

I would appreciate some help and maybe this will help the person who started this thread too. Not trying to jack your thread but figured why start another one.
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Old 02-24-2014, 05:25 AM   #5
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I used the 2 original third brake light wires and ran 1 additional wire. I ran the new wire inside the stock mesh wire loom until it reached the tailgate and then I drilled an extra hole for it in the rubber grommet that was already there and ran it through that. Once inside the tub, I ran it along the same path as the stock wiring and inside the retaining strap. Then over to the passenger side taillight. Sorry but I don't remember wire colors.
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Old 02-24-2014, 09:09 AM   #6
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I used the 2 original third brake light wires and ran 1 additional wire. I ran the new wire inside the stock mesh wire loom until it reached the tailgate and then I drilled an extra hole for it in the rubber grommet that was already there and ran it through that. Once inside the tub, I ran it along the same path as the stock wiring and inside the retaining strap. Then over to the passenger side taillight. Sorry but I don't remember wire colors.
Can you tell me more about the extra wire you ran for the license plate light? What did u tap into for the power source?
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Old 02-24-2014, 09:17 AM   #7
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Can you tell me more about the extra wire you ran for the license plate light? What did u tap into for the power source?
It was one of the taillight wires. I tried the first one and it didn't work. Then tried the second one and it worked. I don't remember what color it was but I can open it up tomorrow and take a picture if you'd like.
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Old 02-24-2014, 12:19 PM   #8
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It was one of the taillight wires. I tried the first one and it didn't work. Then tried the second one and it worked. I don't remember what color it was but I can open it up tomorrow and take a picture if you'd like.
that would be really helpful if it's not too much of a problem.
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Old 02-24-2014, 12:49 PM   #9
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Originally Posted by Sofla Sahara JK View Post
that would be really helpful if it's not too much of a problem.
No problem at all. I'll do it first thing in the morning. Don't have the Jeep with me today and won't be home til dark so can't do it today.
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Old 02-25-2014, 07:08 AM   #10
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Here's how I did it

First I ran an additional wire from the factory brake light connector to the tail light.

See pic 1 - I ran the wire through the factory mesh covering.

See pic 2 - I tried to get the wire through the factory rubber grommet but it would not fit. I probably could have removed the grommet and gotten it through or found another grommet with a larger center hole but I'm not THAT particular. Instead I just drilled a small hole in the grommet and ran the wire through that. I used an awl to make a small hole in the mesh casing to get the wire out from inside. This is the only spot that reveals it's not factory. And it's behind the spare so I wasn't worried.

See pic 3 - once inside the tailgate, I removed the plastic cover and ran the new wire along the factory harness and zip tied to it.

See pic 4 - I then ran the wire inside the factory retaining strap with the others.

I didn't want to remove the factory trim piece again in the tub where the hinge connects so I can't show you where I went through to the tail light area. Either I found an existing hole to run through or I drilled a small hole and inserted a grommet. I think it was the latter but honestly I really don't remember.

See pic 5 - This pic was taken from outside with the tail light removed. You can see the factory red and black wires for the tail light coming through the foam. It also gives you an idea where I came through with the new red wire. I left plenty of slack in there to make sure it doesn't get caught up on the hinge.
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Old 02-25-2014, 07:15 AM   #11
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This is how I did it (continued)

See pic 1 - I then attached the new red wire I ran to the factory white with purple stripe wire on the tail light. I used one of those snap connector things. You may want something better than that but I'm fine with it.

See pic 2 - I pulled back the factory mesh covering by the spare to give myself room to work. I then made the following connections with butt connectors and covered with shrink wrap.

Factory white with red stripe to the red wire on the new harness connector.
Factory black to the black wire on the new harness connector.
Newly run red wire to the green wire on the new harness connector.
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Old 02-25-2014, 05:53 PM   #12
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Thank you. Will give it a shot this weekend.

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