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I have a 1991 honda accord the brake lamp light comes on & off yet all of the back lights work properly why does the brake lamp light come on if the lights work properly
Below your brake pedal theres a switch to cut power supply, check it if its still working good,Below your brake pedal theres a switch to cut power supply, check it if its still working good,
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Re: I have a 1991 honda accord the brake lamp light comes...
You can try to replace all the brake lamp bulbs as sometimes eventhough all bulbs are working but one of them is about to blow and give high resistance. That's why the brake lamp lights up.
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If you have already checked fuses and bulbs, you can do the following:
If you have a multimeter, set it to DC voltage 20 and remove the light bulb. Have someone else press the brake pedal and touch your leads from the multimeter to the contacts (one lead on one, the other on the opposite terminal) and see if you're getting 12-14 volts DC. If you are getting the proper voltage, then the bulb should be replaced with a known working bulb.
If you are getting no power when the brake pedal is depressed, you have a break in the wire somewhere and will need to track it down.
Sometimes, there is a separate fuse for the 3rd brake light - have you checked for that fuse?
It's possible the wire leading to the 3rd brake light has been cut or otherwise damaged - possibly from overloading the trunk and items physically damaging the wire.
Another possibility is a faulty ground for that light assembly. Try to locate a service manual for the car and track down where the ground wire should be and make sure you have a solid connection.
If all else fails, take your car to a qualified technician for a closer look.
I assume you have replaced the lamps/globes with new ones, if not this is the first thing to try.
If your car is fitted with a "faulty light" sensor, ( i.e. if a warning light on the dashboard comes on when you apply the brake and a brake light bulb is not working), this may be the problem. Follow the wiring for the rear lights from the light clusters inside the trunk and you may find the wiring harness plugged into an encapsulated unit in the rear somewhere. Test if power is coming out of this unit when brakes are applied. Or, remove the covers on the brake light clusters from inside the car and check the wiring to the rear window brake light. Very often this is connected to the same ground as the drivers side light. However, the parking and tail and reversing lights usually work off the same ground, so this seems unlikely.
Wow, that's a tough one. I had a 1979 Honda Accord that had a door sensor image that lit whenever a door or hatch was open. I never had a problem with it, however.
Actually, if it was a fuse, then the lights wouldn't light up at all on the dash.
Sounds like a fuse, in the underhood fuse box, the brake lights & cruise are on the same 20 amp fuse. After replacing the fuse, check the brake lights first. Then see if the horn works, horns usually are the cause for a blown fuse, they short out.
Check for continuity and power at the lamps socket. heat can warp the socket or corrosion. if there is power and ground do a wiggle check with the wires and the bulb to see if the light comes on, even for a second. If nothing then maybe look at fuse, relay,brake switch, or broken wires.
After you have checked the fuseand the bulb connection, you may also want to check the brake switch located at top of the brake padel under the dashboard. Once you push the brake padel, the switch will trigger and the brake light will be on. Use simple 12 volt test pen or voltmeter to test the current supply. Enjoy it.
Check the prones inside the connector that you plug into the brake light module. You may have to squeeze, wiggle, tilt each one to see which one is not connecting all that good. I know it may sound confusing. I tried to explain the best of I could.
Below your brake pedal theres a switch to cut power supply, check it if its still working good,
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