I have two problems with my 1991 GEO Metro. There are no dash lights or tail lights/running lights. If needed I will do without dash lights, but I think the two problems are related. I have turn signals, flasher and brake lights. I’ve been told I need a new light switch. Sprayed tuner / contact cleaner and that didn’t help. Another person says a ground wire problem. Where is that located? This is what I noticed; Rear lights-One of these bulbs does double duty as a turn signal and driving light, the turn signal works. If it is a ground wire problem why is the turn signal working? Does this mean the light switch needs replaced?