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Topic Review (Newest First)
06-07-2014 01:33 PM
scottf30 Help, I have a 2008 JK that didn't have factory fogs in the bumper or the factory switch on the turn signal. I bought a bumper with the tow hooks & factory fogs in it and now need to wire it up. I see a 2 wire (green & red) harness running along behind the bumper, I thinking I should avoid the harness and wire directly to a relay and a separate mopar switch I'll install in the lower switch bank, any suggestions?
07-16-2013 07:19 AM
ThingsAbove
Quote:
Originally Posted by ThingsAbove View Post
Wanted to resurrect this thread...

I have some 55w KC fog lights coming. I can't use my factory fogs with my new bumper. I've read completely different answers on whether you can wire 55w aux lights directly off the factory fog wiring of a 2012 JK.

From someone who actually has a 2012 and has wired up 55w aux lights to the factory fog harness direct... does it work or do I need to wire up the relay?
I called KC and they told me to use the relay and drive the relay (white wire) with the original factory positive to the factory fog. There was no need to Install the rocker switch. The fogs are now turned on and off from the factory fog switch on the stalk through the relay.

I'd read elsewhere that the PCM power in the factory wiring would mess with the relay. KC told me they'd never heard of that as a problem. I ran the fogs for a couple hours during a rainy day last Saturday and everything works fine.

So to sum up for 2012 models KC tech support says don't POWER 55w lights direct from the factory fog wiring but use the relay and SWITCH it from the factory wiring.
07-06-2013 07:18 PM
ThingsAbove Wanted to resurrect this thread...

I have some 55w KC fog lights coming. I can't use my factory fogs with my new bumper. I've read completely different answers on whether you can wire 55w aux lights directly off the factory fog wiring of a 2012 JK.

From someone who actually has a 2012 and has wired up 55w aux lights to the factory fog harness direct... does it work or do I need to wire up the relay?
03-12-2012 05:11 PM
kbwwolf
Quote:
Originally Posted by krutj View Post
From my understanding of this, the only time there will be an issue is if the lights that are added require more voltage/amp draw than the factory lights....fwiw
That's what I thought, too. Pretty sure I read on another forum that as long as your aftermarket lights were 12v/55w, they'd be compatible.

Y'all should verify, though, so you don't blow something up.
03-12-2012 05:03 PM
krutj From my understanding of this, the only time there will be an issue is if the lights that are added require more voltage/amp draw than the factory lights....fwiw
03-11-2012 07:17 PM
Snailpower Same here-replaced factory fogs with pilot fogs. Tapped into the factory harness. Works flawlessly.
03-11-2012 07:05 PM
Tkalagher I just finished splicing into my harnesses, cut them right off and attached Pilot fog lights. Everything works perfect, right off the steering column. I have a 2012 JKU.
03-11-2012 01:29 AM
BlackOpsJeep
Nah

Quote:
Originally Posted by willee51 View Post
..... on the 2012, do not splice into the wiring harness. The microprocessors will then cause U BIG problems

If adding new ones go to the battery or if you plan on a number of electrical additions go with a sPOD
I completely cut mine off (kept the connector ends in case I want to switch back) and spliced on another set of fogs and I have no issues whatsoever on my 2012 JKU.
03-10-2012 08:10 PM
Casotakar1229 why don't you get a set of switches for the lights so you don't have to splice them?
03-10-2012 07:38 PM
Tkalagher I'm paying attention, because I was going to splice into the factory harness tomorrow. Sounds like I should only splice into the switch, not the power?

Anyone know which color wire that will be?
03-10-2012 06:19 PM
StealthJK This is the wire kit MOPAR 82210549AB - MOPAR® Fog Light Installation Kit for 07-09 Jeep® Wrangler & Wrangler Unlimited JK - Quadratec

these are the fog lights Amazon.com: HELLA 005750981 500FF Series 12V/55W Clear Halogen Fog Lamp Kit: Automotive

What do you think? Will I need to splice it? If so, how?
03-10-2012 01:36 PM
StealthJK From the looks of things I may not have to splice at all if the ends are compatible with the hella 500 fog lamps and the connectors of the mopar fog light relocation wires it might be able to plug and play. If not I will splice the connector. Just going to have to wait and see but it appears similar.
03-09-2012 04:43 PM
cavsvet74
Quote:
Originally Posted by StealthJK View Post
If I get the mopar fog light relocation connectors and splice into them would this be a better idea?
Yes. This way the plug for the factory fog lights stay intact.
03-09-2012 04:43 PM
NFRs2000NYC I ran a separate harness, and tapped into the OEM harness for SIGNAL ONLY. Works like a charm, no flickering and no dash lights.
03-09-2012 03:38 PM
kgw350
Quote:
Originally Posted by willee51 View Post
..... on the 2012, do not splice into the wiring harness. The microprocessors will then cause U BIG problems

If adding new ones go to the battery or if you plan on a number of electrical additions go with a sPOD
Why not plug into factory fog lights? I added hella 500ff with 35 watt hid kit. Works great had them on for hours at a time and no problems been on for 6 months.
03-09-2012 08:28 AM
StealthJK If I get the mopar fog light relocation connectors and splice into them would this be a better idea?
03-08-2012 12:49 AM
gr8fulKID
Quote:
Originally Posted by willee51 View Post
..... on the 2012, do not splice into the wiring harness. The microprocessors will then cause U BIG problems

If adding new ones go to the battery or if you plan on a number of electrical additions go with a sPOD
Is this the same for 2008s? I spliced into my factory harness and it has been fine for 4 months.
03-07-2012 03:25 PM
willee51
Careful.............

..... on the 2012, do not splice into the wiring harness. The microprocessors will then cause U BIG problems

If adding new ones go to the battery or if you plan on a number of electrical additions go with a sPOD
03-07-2012 12:38 PM
StealthJK just replacing them, although if possible I would like to be able to switch it back if I decided to switch back to my stock bumper
03-07-2012 07:57 AM
daggo66 Are you trying to add to the factory fogs or replace them? Adding would not be recommended. If you're replacing them just cut the connectors and wire it there.
03-07-2012 07:44 AM
StealthJK
fog light splicing 2012

Hey all,

I decided to go with teh hela 500 fog lights 12v/55w for my smittybilt bumper. Does anyone have step by step instuctions on how to do the splicing to the factory fog wires?

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