Howdy all. As the title says, my left outboard brake light is inop. Filaments in bulb are ok, and the parking light in this assembly works ok. New bulb no fix. Other 3 brake lights and high mount brake light work ok, turn signal works ok, so doubt it's the fuse or brake pedal switch at fault.

How do I go about tracing this problem?

I've never monkeyed around with a meter to chase elec problems before, so detailed instructions would be a huge help!

Thanks

Mike

 

Anyone? Buehler? Beuhler??

 

Take your new bulb out and check it for continuity. New parts aren't necessarily good. Check the socket for corrosion. Then put something heavy on the brake pedal so the lights stay on, then measure that power is reaching the wire to the socket (probably green and white). Measure from the wire to frame ground. Also check that the ground wire (black) is really at ground potential with the bulb in.