Bad ground on interior lights? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat
GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat

Go Back   GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat > Pontiac Bonneville > Everything Electrical & Electronic

Everything Electrical & Electronic Have an electrical problem? Lighting, Alternators, gauges, DIC, HUD, etc? Post it here. Please post Audio problems in the Audio forum, and Engine control problems in the appropriate Mechanical forum for your year.

LinkBack Thread Tools Search this Thread
Old 10-10-2011, 11:00 PM   #1
Junior Member
Join Date: Jan 2008
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
dlegatt is on a distinguished road
Default Bad ground on interior lights?

1996 Bonneville SSEI

I have an intermittent issue with the interior lights (front courtesy, lighted front mirrors, rear courtesy, and also the auto dim rear view mirror).

- sometimes the lights and other stuff work as normal
- it seems that after a rain, there is the following issue
- Courtesy lights work when doors are opened or when the headlight switch is rotated to the interior light position
- the sunroof always works
- the foglights always work
- but the foglight switch light is very dim
- the auto dim rear view mirror doesn't work, but the illuminator light on the mirror still is lit
- the individual courtesy lights will not light if you push any of their switches
- if the door is open (lights are on) and you push any of the courtesy light switches, the courtesy light associated with that switch will turn off, and the foglight switch light gets as bright as it normally would
- occasionally, as quick as it starts to act up, it will act normally again

I cleaned all the ground buss bars on each side under the carpet. I also checked the ground wire to the body on the passenger side immediately in front of the passenger door. Battery cables are clean and tight. Generally no other random electrical issues.

My assumption (because of the weird switch operation and the brightening of the foglight switch) that it is some type of grounding issue. Question is where would the ground wire be for the headliner components?

Or can anyone direct me in a different direction to fix this?

dlegatt is offline   Reply With Quote

Similar Threads
Thread Thread Starter Forum Replies Last Post
Bad, bad, bad, bad vibrations.... SilverSleeper8704 2000-2005 11 07-30-2010 05:42 AM
interior lights,dome,and trunk lights don't work Richardyuyu1 1992-1999 0 09-05-2009 04:53 AM
bad ground somewhere for the right 3 gauges...... Toddster Everything Electrical & Electronic 9 09-15-2007 12:54 PM
Interior Pics ('92 Grey/Black Interior or Red Interior) Berlinetta92 Your Ride: GM Pictures & Videos 10 09-07-2004 10:47 AM
Start, no start -bad ground? jkinney 1992-1999 8 01-08-2004 10:59 PM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 03:08 AM.