cant get my driver side low beam fuse to stop blowing. Bare bone stock lights nothing done ever. Changed bulb and checked wires still nothing. Changed headlight switch and still blows. im stumped. Ground is good. only thing left to do is strip all wire looms and check wires this way. not a fun job! Any sugestions?? tap into passenger side and run off same circuit??

 

Headlight switch cannot cause a single low-beam fuse to blow.

Disconnect the bulb from the harness and see if the fuse still blows. If it does, you'll have to rip into the looms to trace out the wire and see where it's shorting to ground. You can probably half-split the circuit by disconnecting C159 to see if the problem is in the part of the harness that goes through the firewall or if it's the under-hood harness.

Bad idea. You'd overload that circuit and end up with no low-beams at all. There's a reason that the low-beams are on separate fuses.

 

ya i messed with this some more today. Pulled bulb and fuse still blows. Looks like im gonna have to start pealing tape and checking wires. Where is this c159? power distrubition box under hood?

 

There are three firewall bulkhead connectors back in the corner on the driver's side. C159 is the middle one.

 

Dumb question #1 from me today...

Did you check the back of the bulb connector for grime in the pins ?

Some times this can have a medium resistance short to another pin ( usually see it on the 7 pin trailer tow adapter ).

 

I checked this connector as soon as the bulb went out. i assumed it was bulb first well i was wrong. as projectsho said its more than likely a bad wire in the loom someplace.

 

Should see if someone has a "short and open circuit finder". I have one, though I don't have to use it very often, it's a life saver when I do. Don't have to rip wiring looms apart. I have seen wires that corrode in 2 inside of the insulation and don't even show any sign of it on the outside of the insulation. That gets to be real fun, but a "s&ocf" will take care of that for you. Don't have any idea why that happens, because when I've seen it happen there has been no sign of water or moisture or corrosive elements present.