Foglight Issue

[CzerniS17]

2006 Silverado, did not have original fog lights. I installed the Factory GM Foglight Kit about 1 1/2 years ago, and have not had an issue until now.

Recently one of my HID ballasts for my foglights when bad (Cheap DDM Tuning one), and I decided to replace it with a nice Morimoto Kit from The Retrofit Source. When I installed the new ballasts, the passenger side will not turn on.

Now, this is where it gets tricky. Here is the troubleshooting I have done already:
-Swapped new ballasts with my headlight ones to make sure they were good. They are.
- Swapped bulbs to make sure both bulbs were good. They are.
- Checked for Voltage at the passenger side foglight connector - Yep. 11.5V.
- Checked the grounds. Yep, all good there.
- Swapped Relays, and made no difference.
- Fuse is good.

I even swapped a regular bulb into the passenger side foglight to completely bypass the HIDs, and here is the WEIRD thing that happened... I turned on the foglights with the factory switch, and nothing happened. However after about 15 seconds, the regular bulb turned on but the Drivers Side HID foglight didn't.

I didn't have the Relay Harness installed that I got from TRS, so thinking that maybe the ballasts needed more voltage to fire both at the same time... I installed the harness. This made absolutely NO change at all. Still the Drivers side is the only one that fires.

What else could it be? Any ideas? The only thing left is the switch inside the cab. But could this cause only one foglight to turn on? I wouldn't think so as I believe there is only one power wire that comes down from the relay box, and then splits to each side.

Either way, I'm stumped. Any thoughts are appreciated!

 

[TechieTruckGuy]

Probably a voltage issue. Hids do use less power once they are running compared to traditional bulbs but use more power when igniting


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[dszx13]

My nnbs does this with the headlights some times. I swapped ballast around an bulbs to see if it was either and all is good. If I turn everything off and back on it works perfect.

 

[Ginger]

put regular bulbs in both sides and see if both fire or if its still one or the other. trying to figure out if its a voltage issue or a wiring issue.

 

[TechieTruckGuy]

I know this may sound crazy but you possibly have a partially burned out fuse. I've had this happen before. Changed the fuse and everything worked like a charm.

 

[CzerniS17]

Fuse was replaced with a new one, and it did not make any difference.

I'll grab another bulb tonight and check with both bulbs in there.

 

[CzerniS17]

Bump - Finally got around to throwing factory bulbs in both housings. Neither will light now. Anybody have any ideas? Foglight and/or headlight switch?

 

[Jared]

switch could be toast
bad ballast

 

[Scooter26]

I put the same kit in my previous 03. iirc there are two wires coming out of the fuse box from the relay to power both lights, and there should be only one ground for both lights as well. am i correct? cause in that case one or both of the wires going into either the ground or positive could be getting weak and losing connection .. idk just a thought.

 

[CzerniS17]

I'm starting to think it may be a wiring issue. The driver's side started working again. I think I'm going to try and mess around with it this coming weekend to see what I can find out.

 

[Ginger]

sounds like wiring to me,

good luck, i traced wires for days when my high beams were stuck on.

 

[CzerniS17]

It doesn't look like you can even order the wiring harness itself from GM... Looks like I might have to make my own.

 

[Ginger]

junk yard my friend.