Skip the auto shop - Our mechanics make house calls

Q: Lights going on and off in truck

asked by on

I believe my truck is having issues with the wire harness where the fuses are located. My lights keep going on and off, and now I have lost my all of my lights, including the brake lights.

A: This problem arises with older trucks. The ...

This problem arises with older trucks. The harness, unless it is damaged, is not usually the problem. The problem usually is in the pins coming loose or making bad contact in the fuse box. When this happens, you start loosing your lights intermittently and possibly other functions as well. It is difficult in your situation because you have an older vehicle, and direct replacement parts may not be readily available. A mechanic can diagnose the problem with your lights and will be able to better determine if it is the pins or if they can simply be tightened and pushed back into place. A technician will also help decide whether or not replacements are necessary.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Headlight Issue

Hello. The daytime running lights are not supposed to function at the same time as the headlights. The daytime running lights are only supposed to come on during the day, to provide additional visibility for daytime driving, independently of the...

Q: Dash lights not working

Hi, have you checked the fuse for the instrument cluster? This is a quick and easy check, however, if the fuse is blown, it blew for a reason, so replacing it is only a temporary solution. As the circuit will...

Q: Cut/spliced wires and interior lighting went off

Hi there, thanks for writing in. When you cut the wires to the stereo, you probably cut the two wires to the radio illumination. These wires are shared with the interior lighting and will need to be repaired. One wire...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...