[Vwdiesel] Terminal 30? 50 etc ignition problems; Miser Method of cure

Mark Shepherd mark at shepher.fsnet.co.uk
Sun Feb 20 09:29:17 EST 2005

this should help:
1) There is no relay for the starter.
2)The ignition signal goes to the solenoid [super relay] on
the starter.
3)There are essentially about two different set-ups:
A) Power comes from the '30' power rail to the ignition
switch. from terminal 'P' on back of relay board to '30' on
ignition switch. This is a 4mm red wire.
 You then under key turning supply power to the '50' line
this is a 4mm black/red [line] wire. This goes directly to
the solenoid on the starter...
B) The black/red [line] goes from the ignition and into the
back of the relay  board along a brass rail and back out
again as a black/red line wire and to the solenoid.
The entry/exit terminals are numbered  (B8 [from ignition]
could also be C18) and D24 going out to the starter
4) There is also ON SOME vehicles a connector block that has
a link to the glowplug relay monitoring/control circuitry
This could technically become separated/open circuited by an
enthusiast ;o)

So what would I do?...
1) Check for permanent power on terminal 30 on ignition
2) Check for switched power to the terminal 50 on ignition
3) See if you have two black/ Red wires going to and from
the back of the relay.
Rumour has it Rabbits get wet boards (corrosion?) although
not in your case...

More information about the Vwdiesel mailing list