Here's a bunch of pinout/wiring info for any of the MK4 VWs. I think it applies to other VWs too, but I haven't checked/confirmed that.

click on all.html to just see everything.
[ICO]NameLast modifiedSizeDescription

[PARENTDIR]Parent Directory  -  
[IMG]22974euroswitchschematic.jpg2005-03-03 00:30 46K 
[IMG]Euroswitch.jpg2008-03-12 03:04 37K 
[TXT]HEADER.html2011-06-30 11:52 207  
[IMG]Pin-out2-2.jpg2013-06-25 23:52 114K 
[TXT]all.html2011-06-30 11:53 296  
[IMG]euro-switch.jpg2011-05-10 16:23 33K 

Apache/2.4.29 (Debian) Server at tdi.mahonkin.com Port 80