Mk4 Golf-Sidelights u/s after bulb swap. - AllTorque
Changed the offside front headlamp unit tonight, then found both the front and rear offside side lights won't work. All the other lights, front and rear, on both sides of the car, work OK. Fuses seem OK. Anyone any ideas where to look for the fault please?

slight change to subject line. - PU
Mk4 Golf-Sidelights u/s after bulb swap. - Pugugly {P}
Did you use an OE bulb ? Certainly its known on BMW bikes that non-OE bulbs will confuse the CANbus wiring system. Other possibility has the bulb been connected upside down IIKWIM
Mk4 Golf-Sidelights u/s after bulb swap. - KenC
whats an OE bulb ?
Mk4 Golf-Sidelights u/s after bulb swap. - Dynamic Dave
whats an OE bulb ?


Original Equipment, as recommended and approved by a manufacturer.
Mk4 Golf-Sidelights u/s after bulb swap. - Screwloose


Fuse 22