I spent one full day working on it and have no answer..yet. I un-plugged all the rear light assemblies to rule out bad sockets or bulbs. Still the Small Lights fuse blows turn I turn on the headlights to the parking light position. There is one strange thing: I have a volt meter and it shows continuity when the probes are inserted where the lights plug in. This usually means the wires are connected somewhere like a short circuit. This happens but not on the Yellow side marker socket in the front. I thought this was normal?

Someone else at this forum mentioned a bad dimmer switch

Also my stereo was replaced but never really installed properly. The wires may be frayed but who knows.

Whom ever has an answer or suggestion please help