My side marker lights are blown as well as the inside lights and the tail lights. Bulbs and fuses have been replaced several times. Does anyone have any suggestions where to go from here? oh the bulbs on the side markers are actually blown and shorting out the fuse that takes the other lights out.

 

You'll need to source the short. It's likely a wire that is grounding out against the body, or possibly (but unlikely) a bad connection.

A bad bulb wouldn't blow a fuse.