Fog Light Help Please
Thread Starter
Heel & Toe
Joined: Oct 2008
Posts: 16
Likes: 0
From: Cape Cod MA
Fog Light Help Please
Hello everyone,
I have a 01 with the HID projectors and LED halo tail lights.
(all of which work correctly)
I noticed today that the fog lights were not working.
Fuse #6 is ok,
Relay #39 is ok,
I replaced both bulbs... still nothing...
Any thoughts?
Thanks! -J
I have a 01 with the HID projectors and LED halo tail lights.
(all of which work correctly)
I noticed today that the fog lights were not working.
Fuse #6 is ok,
Relay #39 is ok,
I replaced both bulbs... still nothing...
Any thoughts?
Thanks! -J
Thread Starter
Heel & Toe
Joined: Oct 2008
Posts: 16
Likes: 0
From: Cape Cod MA
Also, the indicator light in the fog light button does illuminate when on... but the fog lights will not turn on...
Thanks!
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Le Mans Master
Joined: Jun 2002
Posts: 8,352
Likes: 103
From: In the pit, trying to love someone.
Do you have a ground tester? One of those things with a light and a battery clip? Pull the fuse and see if you are getting current through the fuse block. I just had my fun with this today.
Thread Starter
Heel & Toe
Joined: Oct 2008
Posts: 16
Likes: 0
From: Cape Cod MA
Does the relay get power prior to the fuse?
Thread Starter
Heel & Toe
Joined: Oct 2008
Posts: 16
Likes: 0
From: Cape Cod MA
This may wind up as a double post... I just got some warning message that I didn't have time to read before I was redirected...
Anyway, thanks for the link to the vid etc.
No, I don't have a light tester thingy, but I can get one tomorrow.
Does the relay get power before the fuse? or are they kinda two separate things?
Thanks! -J
Anyway, thanks for the link to the vid etc.
No, I don't have a light tester thingy, but I can get one tomorrow.
Does the relay get power before the fuse? or are they kinda two separate things?
Thanks! -J
Last edited by badsax; Apr 21, 2012 at 09:33 PM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Le Mans Master
Joined: Jun 2002
Posts: 8,352
Likes: 103
From: In the pit, trying to love someone.
This may wind up as a double post... I just got some warning message that I didn't have time to read before I was redirected...
Anyway, thanks for the link to the vid etc.
No, I don't have a light tester thingy, but I can get one tomorrow.
Does the relay get power before the fuse? or are they kinda two separate things?
Thanks! -J
Anyway, thanks for the link to the vid etc.
No, I don't have a light tester thingy, but I can get one tomorrow.
Does the relay get power before the fuse? or are they kinda two separate things?
Thanks! -J
Thread Starter
Heel & Toe
Joined: Oct 2008
Posts: 16
Likes: 0
From: Cape Cod MA
I also tried to jump from the batt to the outer (fender side) of the fuse to see if the light would turn on which they did not...
So, what's next?
Thank you again! -J
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Well,,, If your applying 12 VDC and the light isn't lighting,, You more than likely have a GROUND issue.
Go to the lights and do a continuity check on the BLACK ground wires. Ohm out the the black wires to a known good chassis ground spot. Should get zero (or very close to zero) ohms.
Bill
Go to the lights and do a continuity check on the BLACK ground wires. Ohm out the the black wires to a known good chassis ground spot. Should get zero (or very close to zero) ohms.
Bill
Thread Starter
Heel & Toe
Joined: Oct 2008
Posts: 16
Likes: 0
From: Cape Cod MA
Well,,, If your applying 12 VDC and the light isn't lighting,, You more than likely have a GROUND issue.
Go to the lights and do a continuity check on the BLACK ground wires. Ohm out the the black wires to a known good chassis ground spot. Should get zero (or very close to zero) ohms.
Bill
Go to the lights and do a continuity check on the BLACK ground wires. Ohm out the the black wires to a known good chassis ground spot. Should get zero (or very close to zero) ohms.
Bill
I'm going to have to see if I can find my tester...
Just out of curiosity, is there one place (or harness) where the lights ground?
Thanks!
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Examine the schematic. You will see that both black wires go to Splice Pack 100.
ALL the front lights and accessories ground in SP 100.
From SP100 there is a single larger gage ground wire that goes to Chassis ground G-102
SP-100 is taped to the wire harness that transverses across the front frame header and it looks like this:
Chassis ground G-102 is attached to the chassis on a metal stud just behind the headlight assy:
The chassis ground block has internal parts (pins) that can get very corroded (trust me) and needs to be checked :
Bill
ALL the front lights and accessories ground in SP 100.
From SP100 there is a single larger gage ground wire that goes to Chassis ground G-102
SP-100 is taped to the wire harness that transverses across the front frame header and it looks like this:
Chassis ground G-102 is attached to the chassis on a metal stud just behind the headlight assy:
The chassis ground block has internal parts (pins) that can get very corroded (trust me) and needs to be checked :
Bill
Thread Starter
Heel & Toe
Joined: Oct 2008
Posts: 16
Likes: 0
From: Cape Cod MA
My ability to read schematics... much like most of my abilities, is questionable as best...
Anyway, I was thinking about this... shouldn't I have gotten power where the fuse is, even if the lights are not grounding?
Thanks -J
Anyway, I was thinking about this... shouldn't I have gotten power where the fuse is, even if the lights are not grounding?
Thanks
-J
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
If the FOG LIGHT Led on the switch is ON,,, you have power to and out of the fuse....
Are you sure that you are using the tester correctly and is it working?
BC
Are you sure that you are using the tester correctly and is it working?
BC
Thread Starter
Heel & Toe
Joined: Oct 2008
Posts: 16
Likes: 0
From: Cape Cod MA
When I connect the clip on the tester to the negative batt terminal and touch the tip to the positive, the tester does light up.
I've kept the clip connected to the negative terminal of the batt, so my assumption would be that if there was power at the fuse, it would go to ground and light up the tester, which it does not...
And yes that light in the fog light switch does illuminate when on...
Thanks!
-J
Thread Starter
Heel & Toe
Joined: Oct 2008
Posts: 16
Likes: 0
From: Cape Cod MA
Update...
I had been testing the wrong fuse...
So, there IS power going to the fuse... and I guess that brings me back to the grounds. Which I won't have a chance to check out until next week...
Anyway, thanks again for all the help, and I'll let you know what I figure out, or don't...
I had been testing the wrong fuse...
So, there IS power going to the fuse... and I guess that brings me back to the grounds. Which I won't have a chance to check out until next week...
Anyway, thanks again for all the help, and I'll let you know what I figure out, or don't...
