C3 General General C3 Corvette Discussion not covered in Tech
Sponsored by:
Sponsored by:

electrical problem

Thread Tools
 
Search this Thread
 
Old Jul 28, 2023 | 10:32 AM
  #1  
J J N's Avatar
J J N
Thread Starter
Cruising
 
Joined: Nov 2021
Posts: 10
Likes: 0
From: Summerfield Fl
Default electrical problem

I have a 69 coupe 300 hp a/c car. The problem I have is that when I try to adjust the dash lights or turn on the courtesy lights, the parking lights come on. If I turn down the courtesy lights the parking lights go off. Also the dash lights come on with the ignition switch. When I turn on the ignition the dash lights come on I can not adjust the dash lights with the headlight switch.. Any help will be greatly appreciated.
Reply
Old Jul 28, 2023 | 10:44 AM
  #2  
doorgunner's Avatar
doorgunner
2026 Loser of the Year
Supporting Member
10 Year Member
Veteran: Army
Photogenic
Photoriffic
 
Joined: Sep 2013
Posts: 36,498
Likes: 6,969
From: New Or-leens Loo-z-anna
Default

Rookie reply here:

Usually a loose ground wire under the dash causes these problems...the voltage goes to all the wrong bulbs.

If you have a tilt-tele steering column, some wires could be pinched inside the column.
Reply
Old Jul 29, 2023 | 06:10 AM
  #3  
4-vettes's Avatar
4-vettes
Race Director
15 Year Member
Liked
Loved
Top Answer: 1
 
Joined: Nov 2006
Posts: 13,068
Likes: 7,682
From: Sunshine Coast, Queensland, Australia
2025 C3 of the Year Finalist - Modified
2024 C3 of the Year Finalist- Modified
2022 C3 of the Year Finalist - Modified
Cruise-In VIII Veteran
Default

I'm thinking I'd start at the headlight switch. Try jumping wires once switch is disconnected and see what happens. Then go from there.
Reply
Old Jul 29, 2023 | 10:52 AM
  #4  
jpatrick62's Avatar
jpatrick62
Burning Brakes
Photogenic
Photoriffic
Liked
Loved
 
Joined: Jul 2018
Posts: 979
Likes: 258
From: Maryland
Default

For these types of electrical issues, I always look at the wiring diagram for help. Is there a common component that all the faulty circuits traverse? I don't have the diagram in front of me now, but as someone replied earlier, maybe the headlight swx would be a good place to start.
Reply

Get notified of new replies

To electrical problem





All times are GMT -4. The time now is 01:34 PM.

story-0
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-1
2027 Corvette vs The World: Every Model vs Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-20 17:58:41


VIEW MORE
story-2
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-3
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-4
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE
story-5
10 Things C8 Corvette Owners Hate (But Won't Tell You)

Slideshow: 10 things C8 Corvette owners hate, but won't tell you.

By Joe Kucinski | 2026-04-01 18:36:07


VIEW MORE
story-6
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

Slideshow: Should you add one of these incredible Corvettes to your garage?

By Brett Foote | 2026-04-01 18:14:05


VIEW MORE
story-7
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Slideshow: Every Corvette Grand Sport explained

By Joe Kucinski | 2026-03-26 07:13:44


VIEW MORE
story-8
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

Slideshow: Breaking down the 2027 Grand Sport, Grand Sport X, Stingray, and LS6 V8.

By Michael S. Palmer | 2026-03-26 13:48:45


VIEW MORE
story-9
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

Slideshow: 5 reasons bad drivers crash sports cars & 5 ways to avoid a costly shame!

By Joe Kucinski | 2026-03-25 16:32:55


VIEW MORE