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83 GTI Electrical gremlins

Posted: Wed Dec 23, 2015 3:20 pm
by MRMENDER
This is on Huw's car Drove it to the NEC last month when wipers fan stopped working.
Fuse's 10, 11, & 12 Have no power These are Heater fan, Wipers Inc washers & Rear wash wipe.
I have changed the fuse box no difference. I guessed it would be futile as there was no evidence of anything wrong with the old one. I suspect that I have a break in the loom? If I bridge out with wire from a live supply (Horn) all works perfectly.
I can follow the wiring diagram so far! The supply is on track D, question which colour wire is the supply?

Re: 83 GTI Electrical gremlins

Posted: Wed Dec 23, 2015 8:13 pm
by mr.brown
X Contact Relief Relay - tried replacing that? From memory that's the only common thing with power for several devices. I could be making that up though...

Re: 83 GTI Electrical gremlins

Posted: Wed Dec 23, 2015 11:59 pm
by DannyH
a faulty ignition switch can cause anything that needs the ignition switched on to malfunction?

Re: 83 GTI Electrical gremlins

Posted: Sat Dec 26, 2015 10:16 am
by MRMENDER
mr.brown wrote:X Contact Relief Relay - tried replacing that? From memory that's the only common thing with power for several devices. I could be making that up though...
What do you mean X Contact relief relay?

Its not the ignition switch just tried my sapre

Re: 83 GTI Electrical gremlins

Posted: Sat Dec 26, 2015 1:05 pm
by GTXTRA
it's a silver relay, think it's got a 53 marking on it H. I've replaced one on the GTL at some point after a few 'odd' electrical issues.

Re: 83 GTI Electrical gremlins

Posted: Sat Dec 26, 2015 4:13 pm
by mr.brown
Silver, number 17 on it, bottom row, 2nd from left. It's actual function is to cut power to all devices when cranking - but if it's faulty it may be cutting power to those devices all the time.

Re: 83 GTI Electrical gremlins

Posted: Sun Dec 27, 2015 3:45 pm
by MRMENDER
Thanks Mr Brown :-D
All sorted now thanks found a used but good No17 Relay in my shed.All is now good!