Yes, there are fairly 2 simple ways to get to the blue wire. If you have
an 86 or newer, there is an unused spade connector on the back of the
fuse/relay panel. It is labeled G4. The best way to find it is to look
at the Bentley page 97.201. This page shows the back of the fuse/relay
panel and tells you what all the pin numbers are. G4 is on the left, in
one of the 2 rows of G pins.

If you don't have an 86+, or don't want to try to get to the back of the
fuse/relay panel, there is another option for most years. Down under the
front of the van is the OX service reminder odometer. The speedo cable
goes in one end of it and out the other. There are some wires that
connect from it to the dash. One of those wires is the blue wire from
the alternator charging circuit. You can splice into it down there.

Mark

River Clan wrote:

> Unfortunately my vanagon didn't start life as a westfalia, but as a
> sunroof.... so I don't have that factory relay and that blue wire.
>
> Looked at the Bentley, and couldn't find a thing. Is there anything
> under the dash on standard vanagon that I can grab from?
>
> Thanks for your assistance.
>
> Ri
>
>
>
> On Mar 24, 2006, at 10:36 AM, mark drillock wrote:
>
>> If you have an 82-91 Westy the blue alternator charging wire is
>> available under the driver's seat. These years of Camper almost all
>> have a relay already  there for either the fridge or for the dual
>> battery that came in 85-87 Wolfsburg poptop models. The blue wire
>> controls the existing relay. You can branch it over to also control
>> your relay but a better way is to branch over from the output of  the
>> existing relay to control the new relay. This way the new relay  does
>> not add to the load on the blue wire, but is controlled by it.
>>
>> Mark
>