Running Lights/Headlights
Thread Starter
Junior Member
Joined: Mar 2012
Posts: 9
Likes: 0
From: Tucson, AZ
Car: 1991 Pontiac Firebird
Engine: 5.0 TBI V8
Transmission: A4 :/
Running Lights/Headlights
Hello, I have a '91 Firebird 5.0L TBI. Just recently I have been having an issue with my exterior lighting. Normally when I turn on the running lights and fog lights, the headlights would stay closed. Currently when I turn the running and fogs on, the covers will flip up, but stay off until I turn the headlights on. Minor issue, but I am wondering if it would be the switch causing this? Or maybe a relay. Thank you very much for your time! Chive on.
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
Door No More
Somehow power is getting to the Headlight Door Module when it's not supposed to.
It might be a faulty headlight switch.
Using a voltmeter or test light (the type for testing for voltage, not a continuity tester) probe the brown wire at the headlight switch.
Is there power there when the headlight switch is in the marker lights position?
If yes, disconnect the brown wire at the switch.
Is there still power there when the headlight switch is in the marker lights position?
If yes, replace the switch.
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
Happy Racing!
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
How Come Some Drivers On The Street Don’t Know How To Make A Turn In One Direction Without Starting By Turning In The Opposite Direction?
It might be a faulty headlight switch.
Using a voltmeter or test light (the type for testing for voltage, not a continuity tester) probe the brown wire at the headlight switch.
Is there power there when the headlight switch is in the marker lights position?
If yes, disconnect the brown wire at the switch.
Is there still power there when the headlight switch is in the marker lights position?
If yes, replace the switch.
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
Happy Racing!
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
How Come Some Drivers On The Street Don’t Know How To Make A Turn In One Direction Without Starting By Turning In The Opposite Direction? Thread Starter
Junior Member
Joined: Mar 2012
Posts: 9
Likes: 0
From: Tucson, AZ
Car: 1991 Pontiac Firebird
Engine: 5.0 TBI V8
Transmission: A4 :/
Re: Door No More
Somehow power is getting to the Headlight Door Module when it's not supposed to.
It might be a faulty headlight switch.
Using a voltmeter or test light (the type for testing for voltage, not a continuity tester) probe the brown wire at the headlight switch.
Is there power there when the headlight switch is in the marker lights position?
If yes, disconnect the brown wire at the switch.
Is there still power there when the headlight switch is in the marker lights position?
If yes, replace the switch.
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
Happy Racing!
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
How Come Some Drivers On The Street Don’t Know How To Make A Turn In One Direction Without Starting By Turning In The Opposite Direction?
It might be a faulty headlight switch.
Using a voltmeter or test light (the type for testing for voltage, not a continuity tester) probe the brown wire at the headlight switch.
Is there power there when the headlight switch is in the marker lights position?
If yes, disconnect the brown wire at the switch.
Is there still power there when the headlight switch is in the marker lights position?
If yes, replace the switch.
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
Happy Racing!
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
How Come Some Drivers On The Street Don’t Know How To Make A Turn In One Direction Without Starting By Turning In The Opposite Direction?
Junior Member
Joined: Mar 2012
Posts: 32
Likes: 0
From: Kannapolis NC
Car: 89 firebird(going full TA custom)
Engine: sbc 383...LSX swap...in wrks
Transmission: 4L80E
Axle/Gears: 94 ws6 rear, 3:42 gears
Re: Running Lights/Headlights
Forgive me for just jumping in on this thread, but Im having an issue with my front passng fender marker light...the other side lights up(had to clean contacts a lil). Can't fig if its a short somewhere or the sockets bad? Dnt have a voltmeter handy so dunno? Any advice to get pass this small issue?
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
Testing . . . . Testing . . . . Is This Thing On ?
First make sure the left marker light does not work in the hazard or turn signal mode, as well as the lights on mode.
If it doesn’t, make a test light from a known good marker bulb to trace the problem.
Clip the test light across the socket, then keep going back till the bulb illuminates.
That will be the break.
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
Happy Racing!
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
8 Wheels Corner Better Than 4, If You’re On The Outside You Have Fair Warning
If it doesn’t, make a test light from a known good marker bulb to trace the problem.
Clip the test light across the socket, then keep going back till the bulb illuminates.
That will be the break.
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
Happy Racing!
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
8 Wheels Corner Better Than 4, If You’re On The Outside You Have Fair Warning
Thread
Thread Starter
Forum
Replies
Last Post
eightsixseven
Tech / General Engine
2
Dec 16, 2024 01:50 PM
Fast355
DFI and ECM
14
Dec 2, 2016 06:33 PM
