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Old 09-22-2013, 11:38 PM   #1
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New KC HiLites 6" 100 watt hookup to wiring of old OEM wires

Hello,
Sorry I'm a newbie to all this.
I have a 2012 Jeep Wrangler Unlimited. I put on a new front bumper, the new bumper did not have spots for the original bumper fog lights. The wiring is still intact.
I purchased a pair of 6" KC HiLites, 100 watt, to put on the new bumper. It would seem to me A LOT easier to just use the wiring for the OEM original fog lights. I would just have to switch out the connection so it would lock into the KC's light connection. Are there any complications using that wiring? Can it handle the 2 x 100watt lights?
Any ideas and help would be appreciated!
Thanks.
Jim

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Old 09-23-2013, 10:31 AM   #2
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I think the TIPM will see the extra power draw as a short. I think you can run a power wire from the battery to a relay, though, and use the existing wiring and switch to trip the relay.

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Old 09-23-2013, 10:49 AM   #3
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Afmcronnie is exactly right. You'll need a harness.
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Old 09-23-2013, 11:07 AM   #4
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I would definitely not try to run 100W lights with the stock wiring. Wire them to the battery with a fuse and a relay tripped by the oem wiring.
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Old 09-23-2013, 11:51 AM   #5
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I think some people have successfully run 55w lights off the factory wiring but you should definitely use a relay for 100w
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Old 09-26-2013, 11:11 AM   #6
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Thanks guys,
I purchased the 5" 55w fog lights to hook up on the new bumper than and I am going to use the OEM wiring from the original fog lights that I took out with the original bumper.
I'll put the 6" 100w driving lights on the windshield and use KC's wiring, et al.
I'll see how it goes and update when done with pics. Hopefully minimal cursing, minimal damage, minimal trips to Lowes, and they work.

Thanks again!
Jim
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Old 09-26-2013, 11:26 AM   #7
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Originally Posted by docbucky1 View Post
Thanks guys,
I purchased the 5" 55w fog lights to hook up on the new bumper than and I am going to use the OEM wiring from the original fog lights that I took out with the original bumper.
I'll put the 6" 100w driving lights on the windshield and use KC's wiring, et al.
I'll see how it goes and update when done with pics. Hopefully minimal cursing, minimal damage, minimal trips to Lowes, and they work.

Thanks again!
Jim
You may be able to get away with 55 watts on the stock fogs wiring if you are on a 2012+. Ive read about people using 55w autozone lamps and working fine.
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Old 09-26-2013, 11:34 AM   #8
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Afmcronnie is exactly right. You'll need a harness.
99.9% sure you will pop the relays if you do not buffer the PWM with some caps in the new circuit - i.e. the harness Up Hill Bill mentions. The headlights will pop the relays so I assume the fogs have PWM via the canbus and will do so as well.

I setup a DIY system that is triggered from the headlight high & low circuits both independently as well as simultaneously that lets me use the factory column switch as a control for relays that activate several devices.

It energizes a separate power distribution block that can be expanded. I have not used the fog light circuit in the same manner yet but will do so with my next light addition project.

Wiring the 100W incandescent bulbs to the fog light wires without a relay....will work....for a while. That is until you heat up the circuit due to the 8.5 amps you will be drawing through the canbus. IIRC the factory fogs are 13 watts (~1 amp draw)
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Old 09-26-2013, 05:59 PM   #9
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Thanks everyone,

My new plan is to wire the 100w lights separately with the wiring from KC. It has it's own relay, etc. Those are going on the windshield.
I am hoping that the now-just-ordered 55w fog lights to go on the new bumper and use the old wiring for the OEM fogs (those lights are no longer there). I know the 55w's are pulling more juice than the original OEM fogs. It seems that most of the consensus I have looked up that the original wiring, et al, can handle the 55w fog lights.
I have a 2012 Wrangler, if that matters.
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Old 10-01-2013, 11:41 PM   #10
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Old 10-01-2013, 11:46 PM   #11
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OK. Got the 55W 5" fog lights on. Just used the OEM wiring. Worked well. I'll update if they trigger and and are too much for the OEM.
Next, waiting for the windshield brackets (they were back ordered) to wire the 100W 6" driving lights. Again, doing those separately with the KC relay and switch the lights came with.
I know it's a small step with wiring, but for me, with very few cuss words, they actually worked, and I like the lights, I'm pretty happy! (so far).
I'll post when the windshield lights are on. The brackets are in the mail. Should come in next week.
I have installation broken down of what I'm going to do, so hopefully all goes well.
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Old 10-13-2013, 10:42 PM   #12
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all done

Wiring done. Windshield 100 watt lights on own relay. Works well! Put switch on side by door. Seemed to be the easiest access, out of the way, and easy to turn on.
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Old 10-14-2013, 06:39 AM   #13
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Lookin' good!

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