Volvo Electrics - Maz
A couple of weeks ago I bought my girlf an obviously much-loved 1988 Volvo 340 at auction.

On driving it home, electrical gremlins took root when the fan was turned to setting 3. Turning the fan to a lower setting made everything return to normal.

When I tried to install a stereo the other day, they took root permanently, disbling central locking, clock, and most of the dashboard (rev counter, LED display, petrol gauge).

I've checked the fuses and there are no wires obviously loose. i must admit electrics are not my strong point and would appreciate any help available.