C1 & C2 Corvettes General C1 Corvette & C2 Corvette Discussion, Technical Info, Performance Upgrades, Project Builds, Restorations

[C1] Turn Signal Problem

Thread Tools
 
Search this Thread
 
Old Sep 14, 2020 | 02:23 PM
  #1  
sgorman3's Avatar
sgorman3
Thread Starter
Pro
Supporting Member
15 Year Member
Conversation Starter
All Eyes On Me
Photogenic
 
Joined: Nov 2009
Posts: 529
Likes: 19
Default Turn Signal Problem

Looking for a little help from someone who understands electrical circuitry better than me. For some reason, the turn signals on my '54 are both flashing at the same time. Whats odd is that the parking lamps and the tail lights are both functioning correctly (meaning that the left parking lamp and tail light blink when I actuate the turn signal handle down and vice-versa for the right turn signal). Ive checked both the turn signal switch and the flasher and both are operating correctly. Anyone have any thoughts?

Reply
Old Sep 14, 2020 | 03:06 PM
  #2  
65GGvert's Avatar
65GGvert
Team Owner
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2006
Posts: 22,181
Likes: 4,178
From: Kannapolis NC
Default

Read over your question and symptoms and see if you can clarify for me what's not working. It sounds correct to me.
Reply
Old Sep 14, 2020 | 03:44 PM
  #3  
sgorman3's Avatar
sgorman3
Thread Starter
Pro
Supporting Member
15 Year Member
Conversation Starter
All Eyes On Me
Photogenic
 
Joined: Nov 2009
Posts: 529
Likes: 19
Default

Both flasher indicators in the dash are flashing at the exact same time irregardless if the turn signal handle is up or down. In other words they're acting like I have hazards on.
Reply
Old Sep 14, 2020 | 04:47 PM
  #4  
65GGvert's Avatar
65GGvert
Team Owner
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2006
Posts: 22,181
Likes: 4,178
From: Kannapolis NC
Default

Any chance that your indicator lamps are so bright (or a shield missing) that the emitted light is causing the lens on the display to "glow" when either flashes? Anything that shorts the two indicator bulbs together should also short the turn signals together. The voltage for the indicator lamps comes out of the turn signal switch,for the front lamps, any short there should make both sides front signals flash together also. Double check that both front lamps aren't also flashing.
Reply
Old Sep 14, 2020 | 04:58 PM
  #5  
sgorman3's Avatar
sgorman3
Thread Starter
Pro
Supporting Member
15 Year Member
Conversation Starter
All Eyes On Me
Photogenic
 
Joined: Nov 2009
Posts: 529
Likes: 19
Default

I agree with your response whole heartedly. Any short between the two indicator bulbs should certainly cause both parking lamps to blink at the same time. I've actually pulled both the bulbs out of the speedometer housing and they're both very clearly lighting up at the same time. Strange thing is that one of the bulbs is a little dimmer than the other. Not sure if its going bad or not so I went ahead and ordered two fresh bulbs on the outside chance that maybe a dying bulb has something to do with it (but I sort of doubt it).
Reply
Old Sep 14, 2020 | 06:26 PM
  #6  
65GGvert's Avatar
65GGvert
Team Owner
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2006
Posts: 22,181
Likes: 4,178
From: Kannapolis NC
Default

That sounds more like a bad ground. You may have voltage feeding the bulbs through the ground. Try running a jumper wire from a frame ground to the casing on the bulb or where it plugs in and see if it clears up the problem.
Reply
Old Sep 15, 2020 | 08:34 AM
  #7  
csherman's Avatar
csherman
Le Mans Master
Conversation Starter
Loved
Community Favorite
Top Answer: 5
 
Joined: Dec 2009
Posts: 5,514
Likes: 1,955
From: Plano IL
2026 Corvette of the Year Winner - Unmodified
2025 C1 of the Year - Unmodified Winner
2019 C1 of Year Finalist (stock)
2018 C1 of Year Finalist
Default

Check your ground at under the dash - metal bar running across
Reply

Get notified of new replies

To Turn Signal Problem





All times are GMT -4. The time now is 03:23 PM.