Turn signal lights light up when braking?
Thread Starter
Joined: May 2013
Posts: 1,493
Likes: 98
From: CT
Car: 86 Trans Am WS6
Engine: 383 stroker
Transmission: 700r4
Axle/Gears: 9 Bolt Torsen 3.70
Turn signal lights light up when braking?
hey guys, so today as I pulled into Walmart I noticed someone was following me, when I parked he told me that when I brake both of my turn signals light up. I checked it out and he's right. the turn signals still flash correctly when I have my foot on the brake, it's just both will be lit up when my foot is on the brakes and when I hit the turn signal the correct signal will flash while the other one stays solid. Is this normal for 86 trans ams?
Senior Member
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Joined: Dec 2012
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From: Western NY
Car: 88 convertible
Engine: 5.7L
Transmission: 4+3 maual
Axle/Gears: 3.07
Re: Turn signal lights light up when braking?
Brake and turn signal are both "bright" and running lights are "dim" on most if not all cars. Most cars use the same filament (double filament bulb) or use a brighter bulb for brake light and turn signal indications while using the dimmer filament (double filament bulb) or separate dimmer bulb for running lights. If you have a ground problem, it will sometimes show up as one running light going out when you hit the brakes or possibly when the turn signal is used. Sometimes both turn signals will blink when you turn the directional on one way or the other. All kinds of wacky things can happen with a bad ground to the rear of the car. If you think the signals are not functioning properly, check and clean all the ground wires at the rear of the car. HTH!
Thread Starter
Joined: May 2013
Posts: 1,493
Likes: 98
From: CT
Car: 86 Trans Am WS6
Engine: 383 stroker
Transmission: 700r4
Axle/Gears: 9 Bolt Torsen 3.70
Re: Turn signal lights light up when braking?
Brake and turn signal are both "bright" and running lights are "dim" on most if not all cars. Most cars use the same filament (double filament bulb) or use a brighter bulb for brake light and turn signal indications while using the dimmer filament (double filament bulb) or separate dimmer bulb for running lights. If you have a ground problem, it will sometimes show up as one running light going out when you hit the brakes or possibly when the turn signal is used. Sometimes both turn signals will blink when you turn the directional on one way or the other. All kinds of wacky things can happen with a bad ground to the rear of the car. If you think the signals are not functioning properly, check and clean all the ground wires at the rear of the car. HTH!
Supreme Member
Joined: Jan 2006
Posts: 3,341
Likes: 10
From: Mooresville NC
Car: LOWERED ♦ CRIMSON METALFLAKE
Engine: ► 400 KUBES ◄
Transmission: 765R4
Axle/Gears: EATON POSI 4.56
Turn 2 Learn
You didn’t say how long you owned the car.
If not long, it’s possible it was mis-wired by the PO.
As a driver, you’ve probably seen how the fearful drivers put ridiculously bright or flashing brake-light bulbs in the sockets.
Make sure all bulbs are the correct type.
Make sure all 3 contact bulbs are not installed backwards.
Some wild symptoms have been reported when bulbs are the incorrect type or installed 180° out of phase.
Make sure all the ground wires back there make a good connection to chassis ground.
If all of above is normal, remove the STOP HAZ fuse.
Now, with a fused jumper wire, (15 or 20 amp is fine) jump the + battery terminal to one of the light blue wires going to the brake-light bulbs.
What happens when you do that?
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
Happy Racing !
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
“Professional Maniac Operating, Do Not Drive 330 MPH In Your Own Home”
If not long, it’s possible it was mis-wired by the PO.
As a driver, you’ve probably seen how the fearful drivers put ridiculously bright or flashing brake-light bulbs in the sockets.
Make sure all bulbs are the correct type.
Make sure all 3 contact bulbs are not installed backwards.
Some wild symptoms have been reported when bulbs are the incorrect type or installed 180° out of phase.
Make sure all the ground wires back there make a good connection to chassis ground.
If all of above is normal, remove the STOP HAZ fuse.
Now, with a fused jumper wire, (15 or 20 amp is fine) jump the + battery terminal to one of the light blue wires going to the brake-light bulbs.
What happens when you do that?
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
Happy Racing !
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
“Professional Maniac Operating, Do Not Drive 330 MPH In Your Own Home”
Thread Starter
Joined: May 2013
Posts: 1,493
Likes: 98
From: CT
Car: 86 Trans Am WS6
Engine: 383 stroker
Transmission: 700r4
Axle/Gears: 9 Bolt Torsen 3.70
Re: Turn 2 Learn
You didn’t say how long you owned the car.
If not long, it’s possible it was mis-wired by the PO.
As a driver, you’ve probably seen how the fearful drivers put ridiculously bright or flashing brake-light bulbs in the sockets.
Make sure all bulbs are the correct type.
Make sure all 3 contact bulbs are not installed backwards.
Some wild symptoms have been reported when bulbs are the incorrect type or installed 180° out of phase.
Make sure all the ground wires back there make a good connection to chassis ground.
If all of above is normal, remove the STOP HAZ fuse.
Now, with a fused jumper wire, (15 or 20 amp is fine) jump the + battery terminal to one of the light blue wires going to the brake-light bulbs.
What happens when you do that?
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
Happy Racing !
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
“Professional Maniac Operating, Do Not Drive 330 MPH In Your Own Home”
If not long, it’s possible it was mis-wired by the PO.
As a driver, you’ve probably seen how the fearful drivers put ridiculously bright or flashing brake-light bulbs in the sockets.
Make sure all bulbs are the correct type.
Make sure all 3 contact bulbs are not installed backwards.
Some wild symptoms have been reported when bulbs are the incorrect type or installed 180° out of phase.
Make sure all the ground wires back there make a good connection to chassis ground.
If all of above is normal, remove the STOP HAZ fuse.
Now, with a fused jumper wire, (15 or 20 amp is fine) jump the + battery terminal to one of the light blue wires going to the brake-light bulbs.
What happens when you do that?
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
Happy Racing !
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
“Professional Maniac Operating, Do Not Drive 330 MPH In Your Own Home”
Noobish question but What do you mean by contact bulbs?
I'd appreciate it if anyone reading this could film the back of their car while braking and then hitting the turn signal and telling me what lights up
Supreme Member
Joined: Jan 2006
Posts: 3,341
Likes: 10
From: Mooresville NC
Car: LOWERED ♦ CRIMSON METALFLAKE
Engine: ► 400 KUBES ◄
Transmission: 765R4
Axle/Gears: EATON POSI 4.56
Turn 2 Learn
Originally Posted by TylerSteez
What do you mean by contact bulbs?
You’ll notice one of the nubs is higher than the other in respect to the bottom of the base.
Frequently you can look in the socket to see which way the bulb should oriented.
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
Happy Racing !
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
“Professional Maniac Operating, Do Not Drive 330 MPH In Your Own Home”
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