looking for some suggestions re Headlights that dim on and off. Affects low beam, high beam and instruments. Every 20 seconds or so they lose maybe 30 - 40 % brightness and then come back again after about 10 seconds. Had an auto sparky have a look and he thought he had fixed it by cleaning some terminals
but not.
I'm thinking either dodgy earth somewhere or maybe headlight switch ? Anyone else seen this issue ?
Mark