Still more C5 Electrical problems.
Thread Starter
5th Gear
Joined: May 2007
Posts: 5
Likes: 0
Still more C5 Electrical problems.
2002 coup. At night with the light switch on, I have no dash lights and no rear lights. Head lights, brake, turn signals front and rear work fine. When I unlock the car all lights flash as they should. When I turn off the lights and ignition at night the dash lights stay on until they time out. I will be checking grounds tomorrow. Fuses check good. Bulbs are good. What else could it be?
Race Director
Joined: Jan 2007
Posts: 18,643
Likes: 14
From: Norman Oklahoma - The Only State in the Union with no Blue Counties!
Start your car,,,then turn on all the lites, headlites, etc. then without turning off any lites,,,turn off ignition,,,wait a few seconds and then restart the engine,,,I know it sounds nuts but our cars are nuts some times. It only happened to me once and that combo of SH*T "fixed" mine. No problems since! Good Luck!
Tech Contributor
Joined: Oct 1999
Posts: 41,058
Likes: 9,817
From: Charlotte, NC (formerly Endicott, NY)
2002 coup. At night with the light switch on, I have no dash lights and no rear lights (Do you mean the tailights)??. Head lights, brake, turn signals front and rear work fine. When I unlock the car all lights flash as they should. When I turn off the lights and ignition at night the dash lights stay on until they time out. I will be checking grounds tomorrow. Fuses check good. Bulbs are good. What else could it be?
Do your side marker and license plate lights work??
Do your door, fog lamp/rear compartment switch and HVAC Control lights work?
I suspect you may have a problem in the parking lamp circuit. The instrument panel lights are tied into the park light circuit which provides power to the front and rear park lights and the backlight for the switches on the inside rear mirror if you have them. Fuse number 6 and Relay 43.
Melting Slicks
Joined: Oct 2006
Posts: 2,193
Likes: 156
From: Navarre FL
OK this sounds like a really stupid question, I dont mean to insult anyones intelligence (which im not ever sure I spelled right
)and the only reason I bring it up is that I had a similiar problem and this fixed it. Did you make sure the dimmer switch isnt turned all the way down? Took me an hour to try that!
Also did you do any mods right before you got this problem?
)and the only reason I bring it up is that I had a similiar problem and this fixed it. Did you make sure the dimmer switch isnt turned all the way down? Took me an hour to try that! Also did you do any mods right before you got this problem?
Drifting
Joined: Jun 2007
Posts: 1,864
Likes: 0
From: Hopewell Junction NY
I have this same exact problem in my 2000. Wasn't sure how to fix it. I have the LED tailights installed and wasn't sure if that was the source. I also noticed that this doesn't happen in warmer weather for me. Not quite sure what the problem is but I will use everyone's advice.
Thread Starter
5th Gear
Joined: May 2007
Posts: 5
Likes: 0
Thanks all. Of course I tried the simple things first. start the car, turn on the lights, turn off the car, no luck. Checked the dimmer, no luck.
Yes, the vanity, glove box, map lights all work.
No, rear side marker, tag, or running lights, door, or fog lamps. Not working.
I will be back and forth checking the forum. I don't think it's a ground problem but am going to do the clean up on them today anyway. For some reason I am leaning to a relay or switch. Fuses check good.
Any ideas let me know.
After all what better way to spend fathers day than playing with my favorite toy. I really love this car, and have had no problems for over 100K miles. So I am not upset, just need to correct the problem.
Yes, the vanity, glove box, map lights all work.
No, rear side marker, tag, or running lights, door, or fog lamps. Not working.
I will be back and forth checking the forum. I don't think it's a ground problem but am going to do the clean up on them today anyway. For some reason I am leaning to a relay or switch. Fuses check good.
Any ideas let me know.
After all what better way to spend fathers day than playing with my favorite toy. I really love this car, and have had no problems for over 100K miles. So I am not upset, just need to correct the problem.
Burning Brakes
Joined: Mar 2007
Posts: 947
Likes: 1
From: Lower Lake Ca
Tail lights are almost always tied to dash lights, if dash lights are not working then the tail lights are not working in most cases. I'd concentrate on fuses, switches and relays in that circuit.
Safety Car
Joined: Feb 2004
Posts: 4,208
Likes: 2
From: Rochester MN
CI 5-6-7-8 Veteran
St. Jude Donor '04-'05-'06-'07
NCM Ambassador
I did a little searching last night, but didn't find anything conclusive. There were a few mentions of replacing the turn signal stock though.
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Thread Starter
5th Gear
Joined: May 2007
Posts: 5
Likes: 0
Well the grounds are done. I didn't see any problems though, in fact they looked new. Number six fuse shows 14.2 volts while running with lights on across both sides. So let me think, fuse has voltage, the light switch should only energize the lighting relays, closing the contacts completing the lighting circuits. which means either the switch is bad not getting the voltage to the relay or the relay is bad.
Maybe its time to button it up, pop the top on a cold one, turn on the radio, put on another coat of Zaino. and start on the lights again tomorow.
Thoughts?
Maybe its time to button it up, pop the top on a cold one, turn on the radio, put on another coat of Zaino. and start on the lights again tomorow.
Thoughts?
Burning Brakes
Joined: Mar 2007
Posts: 947
Likes: 1
From: Lower Lake Ca
Well the grounds are done. I didn't see any problems though, in fact they looked new. Number six fuse shows 14.2 volts while running with lights on across both sides. So let me think, fuse has voltage, the light switch should only energize the lighting relays, closing the contacts completing the lighting circuits. which means either the switch is bad not getting the voltage to the relay or the relay is bad.
Maybe its time to button it up, pop the top on a cold one, turn on the radio, put on another coat of Zaino. and start on the lights again tomorow.
Thoughts?
Maybe its time to button it up, pop the top on a cold one, turn on the radio, put on another coat of Zaino. and start on the lights again tomorow.
Thoughts?
especially the cold one!
Drifting
Joined: Jan 2007
Posts: 1,977
Likes: 9
From: Houston, TX www.djmotorsportaccessories.com Specializing in C5 & C6 Accessories. DJ Motorsport Accessories.
St. Jude Donor '08-'09
The harzard switch could be going out. Do a search and you'll find same problems that your saying.
Advanced
Joined: Feb 2002
Posts: 64
Likes: 0
From: Kansas City MO
This happened to me recently, The #6 fuse was not blown, but it was not making good contact. Try to move it around with your finger a have someone see if your lights come back on. It's worth a try.
Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
2002 coup. At night with the light switch on, I have no dash lights and no rear lights. Head lights, brake, turn signals front and rear work fine. When I unlock the car all lights flash as they should. When I turn off the lights and ignition at night the dash lights stay on until they time out. I will be checking grounds tomorrow. Fuses check good. Bulbs are good. What else could it be?
http://forums.corvetteforum.com/show...ght+electrical
Theres a site here with all the electrical schematics which may help you troubleshoot.
http://www.redshift.homestead.com/schematics.html
Last edited by DeeGee; Jul 7, 2007 at 05:17 AM.