3rd Brake Light? Why wont it work..
Thread Starter
Burning Brakes
Joined: Apr 2001
Posts: 992
Likes: 0
From: Atlanta GA
3rd Brake Light? Why wont it work..
I have replaced bulbs and still this thing does not work....What am I missing? I know there is a brake light switch somewhere...Where is this thing located? I have check the one on the back of the brake pedal assembly..But, not really sure what I should be looking for....
I'm sure this has came up before for alot of you guys out there.....
I'm sure this has came up before for alot of you guys out there.....
Race Director
Joined: Aug 2002
Posts: 13,356
Likes: 0
From: tucson AZ
St. Jude Donor '04 & '05
Re: 3rd Brake Light? Why wont it work.. (apollo30346)
You know this is probably going to help your problem.....but I installed the third brake light on my '84 vette....from MiD America...but the light is not working....any idea's????
Maybe this can help you too....
tony
:D :D
Maybe this can help you too....
tony
:D :D
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: 3rd Brake Light? Why wont it work.. (apollo30346)
Check the electrical connection at your left hatch riser.
Most likely the connector has fallen off the prong at the lower end of the riser.
Most likely the connector has fallen off the prong at the lower end of the riser.
Thread Starter
Burning Brakes
Joined: Apr 2001
Posts: 992
Likes: 0
From: Atlanta GA
Re: 3rd Brake Light? Why wont it work.. (65Z01)
Left Hatch Riser.... :confused: ...Are you talking about the left side rear hatch where the rear defoger conections are....There is one of those on each side....I must be stupid....
Team Owner
Joined: Dec 1999
Posts: 34,873
Likes: 487
From: Lacey WA RVN 68-69
NCM Sinkhole Donor
Re: 3rd Brake Light? Why wont it work.. (apollo30346)
The 3rd brake light has its own wire that leads back to the brake light switch. It's possible that the contact in the switch is bad. The switch is located above the brake pedal and attached to the steering column. On my 92, the wire is light blue in color. You should be able to check for voltage at the switch. Turn the ignition to ON and depress the brake pedal. If 12v is present, check for voltage again at the connection to the lamp housing. If 12v is present there, you may have a bad connector at the lamp housing or a bad ground wire connection. If no voltage is present at the switch, replace the switch.
Team Owner
Joined: Mar 2001
Posts: 54,124
Likes: 30
From: Cincinnati, Oh USA
Re: 3rd Brake Light? Why wont it work.. (c4cruiser)
The brake switch has 2 contacts, one for the lower brake lights and one for the upper brake light. One wire from the upper brake light goes to ground. Check both wires for low resistance (less than 1 ohm) to ground with the brake pedal NOT depressed. One wire must have low resistance to ground. the other wire has 12v on it when the brake is depressed. My bet is on a defective brake pedal switch.
I'm jfb and youre not.
I'm jfb and youre not.
