Club 80-90 Forums

OK fixed the brake lights, fitted new switch and bled all the brakes, the lights come on instatntly i press the pedal. Excellent. Only problem now is that brake fluid leaks from the brake light switch where it screws into the end of the master cylinder. I have screwed it in but not completely all the way as it is a really tight fit and i'm scared of busting something.
My question is: do these brake light switches have to be screwed all the way in so that the flange of the switch meets that of the master cylinder. How can i stop fluid leaking down the threads, can't really use PTFE tape?
Anyone got any similar experience, these switches are pretty reliable i believe so not may folks have to take them off and srew one back in.

Anyone??
Thanks
Simon

There should be a copper washer behind the switch.
MG

Thanks for the reply, No washer on ETKA parts catalogue, have you seen washers fitted between switch and master cylinder before?
Regards
Simon

Yes on lots of Aircooled and watercooled vw's.
MG