Top idea Adrian 
A few years ago I became curious about this VW Diagnostic / Network socket in the engine bay.
I came across this interesting website (part of Speedy Jim's website)
http://www.nls.net/mp/volks/htm/plug.htm
Click on the blue dots to get wiring diagrams.
I then tried to trace the actual wiring to the plug on my 1971 Kombi.
See the attached pdf file with a table indicating the plug wiring I found on my 1971 Bus.
It was very close to the website - few minor differences.
I do not think I have a connection on terminal #5 (defroster relay) - but I think terminal #9 has a red wire going to Fuse #2.
This table was done a while ago, I would need to double check.
I had contemplated rigging up a remote starting switch that I could plug into this Diagnostic / Network socket- to start and stop the engine at the engine bay.
Would be handy when tuning carburetors and doing ignition timing etc..
Has anyone ever done this ?
Cheers Grant.
A few years ago I became curious about this VW Diagnostic / Network socket in the engine bay.
I came across this interesting website (part of Speedy Jim's website)
http://www.nls.net/mp/volks/htm/plug.htm
Click on the blue dots to get wiring diagrams.
I then tried to trace the actual wiring to the plug on my 1971 Kombi.
See the attached pdf file with a table indicating the plug wiring I found on my 1971 Bus.
It was very close to the website - few minor differences.
I do not think I have a connection on terminal #5 (defroster relay) - but I think terminal #9 has a red wire going to Fuse #2.
This table was done a while ago, I would need to double check.
I had contemplated rigging up a remote starting switch that I could plug into this Diagnostic / Network socket- to start and stop the engine at the engine bay.
Would be handy when tuning carburetors and doing ignition timing etc..
Has anyone ever done this ?
Cheers Grant.
1971 Sopru aka Doob