Just bought a 99 jeep wrangler se 2.5L. It's in great shape except for an electrical problem I noticed on the drive home. I hit a bump on the highway and noticed my gauges dropped to zero and the air bag light went off. I tapped the break and all went back to normal. That night I did a walk around and back lights were not working. pulled the light switch in and out a few times and then it went back to normal (lights worked but were not stable) Sometime working, sometimes not. So next day I switched the plunger switch for the lights (there was corrosion) and then all seemed fine for a few weeks or so.
Just put on new tires / plugs / oil change and on the ride home from the shop, same thing. All gauges went to zero, air bag light, tapped the breaks and all went back to normal... Except now the turn signals work. Lights work. Break lights work... Not sure where to start.
Open to suggestions.