I have a little prob with my car.
First let me explain how it started.My car needed an annual check up so i go to a friend of mine who works part time in a garage.But when i got back to collect him i found out that my window whipers didn't worked,soi drove back to the guy and he put in an other plug or something.So they worked again but after a few weeks he suddenly stop when i was driving ( no i didn't run out of gas

).But after iwaited a little while he drove back for a while a then he stop again, so when i took a drive i was always twice the time on the road as usual.Because i did him to a real VW garage and he drove for a week an suddenly he has it again.Now i've been told that i could be some electrical function.Could someone help me or maybe experienced the same situation.
Thnx in advance
PS It's a vw scirocco 1800 GT from 1988