Okay, electrical guys... discovered this afternoon that my brake lights are not working on my 87 YJ, courtesy of the local constabulary. [img]images/graemlins/blush.gif[/img] Now I need a little help troubleshooting. Here's the situation:
1) Tail (parking) lights, back-up lights, turn signals, and hazard lights all work fine - both sides.
2) Hooked up a digital voltmeter to the brake light switch (on the pedal lever). The switch shows infinite impedence when the pedal is up and <1 Ohm when the pedal is down (resistance of the test wire). I'm assuming this indicates the switch is working - I didn't find a reference in my Haynes.
3) A four prong (3+1) trailer light plug is spliced in to the harness right in front of the plug in the hard top for the dome light (above driver's tail light). All trailer lights (parking, brake, turn, and hazard) have worked fine until now.
4) Brake AND parking lights have quit working on the trailer. Turn signals and hazard lights still work fine on both sides.
5) Hooking up the trailer lights has no impact on the behavior of the <nobr>Jeep's
6) The fuse box shows that the hazard and brake lights are on the same fuse. Checked it anyway and it's good.
Any help would be most appreciated. [img]images/graemlins/smile.gif[/img]