Fog lights not working

**GAFF** · 12-02-2010

I have HIDs in my stock fog housing. Both quit working at the exact same time. Can anyone help diagnose the problem?

**stlunatics2oo3** · 12-02-2010

check fuses?

**machinegunsquid** · 12-02-2010

I dont think there are any inline fuses on HID's..but there should be a Fog-light fuse either under the dash, or under the hood..check to see if there is, and if its blown, that could do it.

If you have a relay harness, the relay may have gone bad...

Check all your connections, then double check, because it'd be weird for both bulbs/ballasts to go bad at the exact same time..

**GAFF** · 12-03-2010

I think its the fuse under the hood. Its a big ass one so what do i do go to a dealership or do auto parts stores carry them

**TheOtherNick** · 12-03-2010

Auto parts stores carry them its called a maxi fuse.

**presser** · 12-03-2010

mine quit working a few months ago, cleaned up the relay ground and put some electric grease stuff from autozone on it and they work ever since. I know it's frustrating but a lot of the times its the ground. got a low washer fluid warning and fixed that by finding the ground and cleaning it...it happens man. definitely check the fuse but if that's good then next look at connections and grounds

**GAFF** · 12-04-2010

Ok i have no relay harness's. The bulbs look fine everything is still connected. It has to be the fuse since they happened at the exact same time. Im going to try and get out of bed and get something productive done on my car this weekend.

thanks 01 for the maxi fuse enlightenment.

**GAFF** · 12-05-2010

Didnt fix it...

**shawngtp** · 12-05-2010

switch one of your fog light ballast with one of your headlight ballast. Just to see if you ***** slapped both of your fog light ballast's

**GAFF** · 12-05-2010

Ill prob try that. Just to cold lol. But yea the ballast dont scream like the use to when i turn them on so i know its the connection or the ballast.

**Tommyp2010** · 12-05-2010

Originally Posted by Gafford44

Ill prob try that. Just to cold lol. But yea the ballast dont scream like the use to when i turn them on so i know its the connection or the ballast.

probably burned out connections. That'll happen when you don't use a relay harness.

**GAFF** · 12-05-2010

Its the 10a fuse in the engine fuse box. Replaced it after taking everything apart cleaning putting back together. Wouldn't work with the stock bulbs so knew it was a fuse. Then i realized the fuse that i missed before.

But now I replace the fuse and it blows again after like 3 sec.

**TheOtherNick** · 12-05-2010

You need a relay then.

**GAFF** · 12-05-2010

So buy the HID relays?

**matt5112** · 12-05-2010

Pretty much, probably best to just make your own though.

parts stores have lighting relays on the cheap.

**TheOtherNick** · 12-05-2010

You can make your own for like $10.

**machinegunsquid** · 12-05-2010

My fog lights did that once I put the HID's in. Checked everything, turned out to the be fuse, so I replaced it, and it never blew again...guess it was just an old/faulty fuse...

**matt5112** · 12-05-2010

fuses do wear but i have 55 watt halogen fogs and they ran fine on stock wiring and fusing.

Installed a relay and redid all the wiring because one side would go on and off due to bad ground.

Brighter now.

**GAFF** · 12-05-2010

Well like i said. replaced the fuse it blew 3 times. So either my wiring is bad. Although i just redid it all, or i need something to help it.. ie relay. But I have had these fogs for over a year and first time having a problem.