Turn signal problem, please help!
Thread Starter
Intermediate
Joined: Oct 2022
Posts: 39
Likes: 4
From: Ohio
Turn signal problem, please help!
I have a 84 vette and my right turn signal doesn't work. Whenever I go to turn right the light on the dash stays on and and the lights outside turn on but don't blink. But if I have the running lights and headlights on they don't turn on at all on the outside and the right turn signal indicator just stays on the dash until I turn the lights off. I have all new correct bulbs, but it was doing this before I installed them aswell so idk 
Racer
Joined: Feb 2017
Posts: 382
Likes: 70
From: Beavercreek Oregon
2024 C4 of the Year Finalist - Unmodified
I would have thought it was a bulb but you stated they are replaced
Turn signal relay?
I have had this work twice before so you may try it it wont cost anything
Engage the emergency flasher for at least 30 seconds at least walk around the car and see if they are flashing as they should
Shut it off Then try the turn signals again
If they work for second or two then quit it's probably the flasher
Good luck
Turn signal relay?
I have had this work twice before so you may try it it wont cost anything
Engage the emergency flasher for at least 30 seconds at least walk around the car and see if they are flashing as they should
Shut it off Then try the turn signals again
If they work for second or two then quit it's probably the flasher
Good luck
Melting Slicks
Joined: May 2019
Posts: 3,095
Likes: 1,339
From: Mid-Atlantic
2025 C4 of the Year Finalist - Unmodified
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I have a 84 vette and my right turn signal doesn't work. Whenever I go to turn right the light on the dash stays on and and the lights outside turn on but don't blink. But if I have the running lights and headlights on they don't turn on at all on the outside and the right turn signal indicator just stays on the dash until I turn the lights off. I have all new correct bulbs, but it was doing this before I installed them aswell so idk
That all needs to come out. I used a very thin-bladed screwdriver to dig it out of all of those grooves.
Or replace the sockets. They're inexpensive and available locally. I replaced a lot of mine after deciding it was more efficient and they get old and crunchy anyway over the years, so why not...
A lot of times you cant get a full twist on the bulb if that old crud isn't removed.
Drifting
Joined: Jul 2022
Posts: 1,804
Likes: 364
From: Central Florida
It is possible the hazard and turn signal flashers are the same part number if you want to try and swap them, I would check the part numbers on them before doing so but most sites that supply parts list them both as the same number. My FSM, parts and wiring diagrams are for an 87. I am not sure about the 84's locations, I am "guessing" one (hazard) is behind the drivers information panel (center stack) and the other (turn signal) is near the ECM on passenger side but again, I don't have an 84.
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Last edited by Vets-Vet; Jun 2, 2023 at 05:39 PM.
Le Mans Master
Joined: Jul 2004
Posts: 6,211
Likes: 694
From: Clifton Park, NY ............Clearwater, FL ... 85 Original Owner
I have a 84 vette and my right turn signal doesn't work. Whenever I go to turn right the light on the dash stays on and and the lights outside turn on but don't blink. But if I have the running lights and headlights on they don't turn on at all on the outside and the right turn signal indicator just stays on the dash until I turn the lights off. I have all new correct bulbs, but it was doing this before I installed them aswell so idk
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Racer
Joined: Mar 2020
Posts: 384
Likes: 144
From: Langton, Ontario, Canada
2025 C4 of the Year Finalist - Unmodified
The turn signal flasher operates by using the heat generated by the light bulb amps flowing through it, to bend a bi-metallic switch contact. If there's no amps, there's no heat. If there's no heat, then there's no on/off switching. I'd look at the bulbs themselves on the right side. I'm wondering if being 1157's, they could be turned in the socket, so that you're switching on the running light filaments instead of the turn indicator filaments. When you have the hazard light switch on, are the right bulbs as bright as the left bulbs? One other possible solution may be to replace the mechanical bi-metal flasher relay with a solid-state flasher.
Pro
Joined: Sep 2019
Posts: 716
Likes: 135
From: Buchanan, Michigan
I have a 84 vette and my right turn signal doesn't work. Whenever I go to turn right the light on the dash stays on and and the lights outside turn on but don't blink. But if I have the running lights and headlights on they don't turn on at all on the outside and the right turn signal indicator just stays on the dash until I turn the lights off. I have all new correct bulbs, but it was doing this before I installed them aswell so idk
Pro
Joined: Sep 2019
Posts: 716
Likes: 135
From: Buchanan, Michigan
The turn signal flasher operates by using the heat generated by the light bulb amps flowing through it, to bend a bi-metallic switch contact. If there's no amps, there's no heat. If there's no heat, then there's no on/off switching. I'd look at the bulbs themselves on the right side. I'm wondering if being 1157's, they could be turned in the socket, so that you're switching on the running light filaments instead of the turn indicator filaments. When you have the hazard light switch on, are the right bulbs as bright as the left bulbs? One other possible solution may be to replace the mechanical bi-metal flasher relay with a solid-state flasher.
Drifting
Joined: Jul 2022
Posts: 1,804
Likes: 364
From: Central Florida
""But if I have the running lights and headlights on they don't turn on at all on the outside and the right turn signal indicator just stays on the dash until I turn the lights off"".....
Does this mean if you turn only the headlights on the turn signal bulb will light ??
Does this mean if you turn only the headlights on the turn signal bulb will light ??
Burning Brakes
Joined: Sep 2017
Posts: 916
Likes: 162
I have a 84 vette and my right turn signal doesn't work. Whenever I go to turn right the light on the dash stays on and and the lights outside turn on but don't blink. But if I have the running lights and headlights on they don't turn on at all on the outside and the right turn signal indicator just stays on the dash until I turn the lights off. I have all new correct bulbs, but it was doing this before I installed them aswell so idk
Pro
Joined: Sep 2019
Posts: 716
Likes: 135
From: Buchanan, Michigan
""But if I have the running lights and headlights on they don't turn on at all on the outside and the right turn signal indicator just stays on the dash until I turn the lights off"".....
Does this mean if you turn only the headlights on the turn signal bulb will light ??
Does this mean if you turn only the headlights on the turn signal bulb will light ??