Question about 1987 Oldsmobile Cutlass Supreme
Check the brake light switch at the top of the brake pedal, also make sure to check for any bad fuses for the brake light circuit.
Posted on Oct 20, 2008
hello what i would do first disconnect the wires off the brake light switch test the power wire to make sure you have power to the switch if you do contact them to bypass the switch completely test see if your lights are lit if not i would trace the wiring back to the sockets contacts inside might be corroded or wires in the socket are not contacting the metal tab or broken at the crimp they sell replacement sockets you can splice into the harness if you dont have power at the break light wires you need to trace wires back to fuse panel first check to make sure there is not a secondary fuse box under your hood usually on drivers side near the strut tower usally says fuses goodluck please rate
Posted on Oct 02, 2008
SOURCE: Lighting prblem
MY BRAKE LIGHTS DONT WORK. I CHECKED FUSES AND THEY WORK. I CHECKED BULB AND ARE GOOD. WHEN I TURNED MY HEAD LIGHTS THEY WORK BUT WHEN I PUSH THE BRAKE PEDAL THEY DONT.
Posted on Nov 08, 2008
Do you have a trailer plug? Look for corrosion around taillight plug under truck in the back, PULL IT APART to see if there is any corrosion. If you find none, than take the taillight housing out and run a external wire from a clean spot on frame to the ground on housing, it could be a ground issue. Did you test light the break light switch power in power out?
Posted on Apr 10, 2009
Check the brake light switch under the dash at the brake peddle and make sure its working if it does not close when you depress the brake peddle the lights will not work You may hve to remove the lower cover for the dash to get at the switch
Posted on Sep 03, 2009
Yes, you need to of course check the voltage coming into and going out of the brake light switch, if 12 Volts are there going out and coming in while pressing on the brake pedal, your brake lights aren't getting a good ground or there is a break in the circuit between that switch & the lights.
On occasion the tail lights will work with a weak ground circuit where the Brake lights won't. Best way to determine this is to just hook up the 12 volt tester to the Brake light hot wire & there at the bulb ground, then in an area away from the bulb that has a good possibility of contact/ground.
Really that's it, if the 12Volts is getting to the bulb but it isn't lighting, if you aren't getting the voltage there and the brake switch is hot on both sides when pressed, the break in voltage will have to be traced from that switch to the tail light to find the problem.
Posted on Feb 22, 2010
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