Two wires - Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > General Jeep Discussions > Off Road and External Lighting

Join Wrangler Forum Today

Thread Tools

Please support our sponsors and let them know you heard about them on
Old 05-17-2013, 07:52 AM   #1
Join Date: May 2013
Location: Chester, Nova Scotia
Posts: 4
NS Jeep is on a distinguished road
Two wires

So I thought I knew what I need to hook up a set of OEM fog lights, silly me.

I bought a set of second hand fog lights from a guy who removed them from his TJ, they work fine, maybe too fine. Before I did anything, I set up my battery charger and determined which wire (one blue, one black, no stripes) was ground and which wire was power. Apparently both are ground and power, no matter which wire I hook up, I get power to the lights, how come? Is this correct or do I have some sort of weird light thing going on?

From there, all I intend to do is hook up a power wire to the fuse panel, ground wire (s), relay, switch and poof, we have light. Right?
NS Jeep is offline   Quote
Old 05-17-2013, 09:36 PM   #2
sparky's Avatar
Join Date: Oct 2009
Location: Phila
Posts: 2,705
sparky is on a distinguished road
Lights really arn't polorized. You need to find which wire connects to the frame of the lights, if any. Are they metal housing or plastic. Easiest way is to take them apart and look.

From the color code, most likely the black is ground, but it's best to check.

sparky is offline   Quote
Old 05-19-2013, 08:13 AM   #3
Join Date: May 2013
Location: Chester, Nova Scotia
Posts: 4
NS Jeep is on a distinguished road
Thanks for the come back Sparky.

They are stock jeep fog lights off a TJ and have black plastic housings. Two wires coming out of each light, one blue, one black. On my bench, I tried each wire and again, it doesn't matter which wire is hooked up to the power source, or ground, they light up.

My greatest experience with lights is from my motorcycling days so I am quite aware black is "normally" the ground wire, so that is what I am going with, using the blue as the power wire.

I have installed them the bumpers and have run the wires up to the engine compartment, now all I have to do is wire them in to the fuse panel, switch, relay, in line fuse etc.

I have never seen this situation before, but my experience is limited.
NS Jeep is offline   Quote

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Download our Mobile App

» Featured Product

All times are GMT -5. The time now is 06:23 AM.

User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC. is not in any way associated with the Chrysler Motors LLC
« Back

Enter your email address:

Delivered by FeedBurner