Pics for fog light fix

catera00 · #1 (**permalink**) 02-04-07, 12:44 AM

I had the issue where my fog lights werent turning on. The light on the dash did not come on either. My brights worked so it wasnt a fuse.

Thanks to this forum, I found the answer and went through the steps. I didnt see any pictures of the process so I took some. I thought I'd post them in case someone wants to try this and needs to see what it looks like.

Also, I just bought my silver '00 sport two days ago and its the best car I have ever owned! Its so nice. Glad to see this forum is full of intelligent people who know what they are talking about. Thanks for the help.

Instructions from member TLARWA
original post: http://www.cadillacforums.com/forums...ight=fog+light (fog light issue)

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It's the fog light relay, which is a grey, largish plastic box with a plug in connector under the dash. To get to it, you have to remove the panel under the steering wheel, then the black plastic panel behind that, so you can see all the wires and stuff under the dash. The relay is located on the far RHS (driver's side) of the car, and can be twisted off of the frame it's mounted to (it just clips on). Once you have it free, unplug the connector and remove it from the vehicle to look at. Just so you know, you really have to crawl under the dash with a flashlight to see it and get to it. Once it's out, open the plastic case (there's a removable panel on one end) and pull the circuit board out. There are 5 relays (I think) wired on to it. Look for cracked or cold solder joints. Mine had a cold joint which I resoldered, and it fixed the problem. If you aren't that lucky then you'll have to order a new relay. It's a K34 (I think) multi-function relay, and is only available from the dealer (it's an OEM part). Do NOT order what NAPA says is the fog lamp relay, 'cuz it's the wrong one (trust me on this).

Heres the relay box under the dash. Its the grey one:

This is the relay box removed from the car:

Remove the cover:

You have to carefully pry up on this tab at the bottom that clips on to the harness plug as you push it in from the bottom:

Remove the circuit board. The fog light relay is indicated here:

The broken solder point is marked in this photo. You can see how it's jagged and cracked around the edges:

This is the solder point after re-soldering:

It's a very simple process. If you are uncomfortable with soldering, you could bring it to someone who knows how to do it. Hope this helps. Thanks again.

heavycat · #2 (**permalink**) 02-05-07, 08:18 PM

Great help, my fog lights havent been working for almost a year. After checking every fuse and relay I could find I just gave up. 10 minutes after reading this thread and there back. It was a cold solder just as you said.

catera00 · #3 (**permalink**) 02-05-07, 08:40 PM

Thats great! Congrats. I was pretty stoked when it ended up being that simple. Not to mention free! I wonder how much a whole new relay unit costs? Theres probably a lot of people replacing them when they dont have to.

rinverso · #4 (**permalink**) 02-05-07, 11:35 PM

that is awesome, you spent the time to help us cat lovers. thanks again, robert

catera00 · #5 (**permalink**) 02-06-07, 12:31 AM

no prob, I'm a cat lover too! (For 4 days now) Love this car.

Marks DTM Calib · #6 (**permalink**) 02-07-07, 12:09 PM

Blimey...totaly different setup to the europeon cars.....we dont have that additional relay box!

Warez · #7 (**permalink**) 02-08-07, 02:36 PM

Do fog light turn off when the highbeams are in use on the Euro version?

Marks DTM Calib · #8 (**permalink**) 02-09-07, 10:54 AM

No....You can happily drive along with 300W of illumination at the front!

Having said that, I have an Omega fitted with discharge lamps (HID's) and they are so good the fogs make little difference!

WPPZ · #9 (**permalink**) 03-11-07, 11:31 PM

I have the same problem. Sometimes they work and sometimes they don't. But the indicator light on the dash board was never on?

BLK98LAC · #10 (**permalink**) 03-12-07, 11:16 PM

thanks for the thread man. had my cat for about a week now and love it. fogs haven't worked from the begining. indicator light doesn't come on and neither do the fogs. have to try this on my next day off.

you think the 98 and 00 relays are the same? should be.

dgramm · #11 (**permalink**) 03-13-07, 08:14 PM

Thanks for taking the time, you did a great job. It's so much easier when I can look at real pics!

Thanks again.

BLK98LAC · #12 (**permalink**) 03-14-07, 01:56 PM

fixed my fogs this morning.

now i just need to buy a new bulb and i can use my fogs.
lol

thanks again

k0yla · #13 (**permalink**) 05-16-09, 11:36 AM

Good call!

R-Caddy · #14 (**permalink**) 05-16-09, 01:25 PM

Wow. I just checked my spare Relay and found why my radio was cutting off every 10 minutes or so. I tracked a loose solder point. I will try to post a picture when I get some batteries for my camera

Good job catera00

Aras

R-Caddy · #15 (**permalink**) 05-16-09, 04:02 PM

Here's the radio power connection. It's the bottom one on the board above the coil

I also found another similar bad connection. Fixed them both. Now I can test it and see if it fixed the problem. Not that I need this relay, since I have another one in, but maybe some day, or if someone else needs one.