Electrical Problem

[john]

This is on ghettostyles 95 talon AWD

A while ago, his parking lights would come on at random times even if the switch was off. That progressed to the lights always being on (we had to pull the fuse to get the lights off). Now his lights do not come on with the switch on and the fuse in. I checked his switch and it is fine (checked for continuity and grabbed remy's switch out of his car). Any idea what can be wrong? This problem needs to be fixed ASAP. Thanks, John