Fuses That "Blow" Repeatedly
Without being able to "hands on" troubleshoot the circuit served by the repeatedly blowing fuse, no one can identify the specific cause/defect which is causing your problem.
The following generic answer applies to any electrical circuit, whether in a vehicle, or in a building, or whether alternating current [AC] or direct current [DC].
Fuses [and Circuit Breakers] are safety devices designed and installed in electrical circuits TO PROTECT the conductors [wires] and other components from short circuit conditions and/or overload conditions which cause an extremely large flow of electrical current [measured in Amperes], which causes overheating of the conductors that results in damage to the insulation and the conductors. And in a worst case scenario, the probability of a FIRE which could destroy the vehicle, house, or other structure in which the circuit is located.
When a fuse or Circuit Breaker [and replacement fuses, or "tripping" Circuit Breakers] "blow," especially if it happens repeatedly, is an indication of an UNSAFE CONDITION in that circuit, usually a short.
The fuse or circuit breaker is doing what it was designed, intended, and installed to do, protect the conductors and components of the circuit which it serves.
The proper "fix" is for a qualified technician, who knows what he or she is doing, to troubleshoot the involved circuit, find and identify the defect, and make proper repair [s], BEFORE replacing the fuse again [with the properly sized fuse or before resetting a circuit breaker].
Some ignorant few will suggest installing a larger fuse or breaker to solve the problem, BUT that will only increase the hazard, not correct it. Do not follow "bad" advice by installing a larger fuse in a misguided attempt to correct the problem. To install an over-sized fuse would almost guarantee damage to the wiring and an electrical system fire.
Replace it again!
There could be a switch that has gone bad in the headlight. The entire assembly will more then likely need to be replaced.
If the trunk light bulb still isn't working, it may need to be replaced. Also, check to see if the problem is a blown fuse.Ê
my Oldsmobile alero did the same thing. It turned out to be as simple as a blown bulb in my tail light.
Try the fuses in front of front passenger door (RHD) or under bonnet.
If the night running lights have failed the bulbs should be checked. Find the bulb housings and remove the parts. After the bulbs are replaced check the lights.
No. Circuit is open but still HOT.
i have a 1990 Chevy van cargo left hand turn blinker not working (rear) all other lights work change out bulb still not working
check high mount brake wiring from trunk...
More than likely the ballast in the fixture has failed.
No. I am assuming that you first replaced the bulb? If you did replace the bulb, then I would check to see if you are getting power to the bulb socket. If no power is getting to the socket, you then need to find the break in the electric lines going to the socket.
Same thing happened to mine. I had to replace the whole thing. Mechanic told me it was due to a nonworking electrical wiring that was connected to the brake lights were out. Once you replaced the whole thing, it should be working.