A W connector is used by Diesel engines with tachometers.
To the best of my knowledge that is what it's for.
Next most Vanagons have a blue wire but it goes to the solenoid actuatior
wire on the starter.
It normally has a little square push in connector different from any
other connector in the engine bay.
Possibly it doesn't go to the battery but just to the starter.

Stan Wilder

On Fri, 20 Jun 2003 08:53:37 -0600 Matt Heydon <matt@THEHEYDONS.COM>
writes:
> Group Members:
>
> I have an '87 Weekender with a failing alternator. My mechanic (who
> is
> trustworthy & knowledgeable) has a replacement for me BUT without
> the "W"
> connector. My current alternator has this "W" connector with a light
> blue
> wire running from it up to the relay next to the aux. battery under
> the
> driver seat.
> Can anyone tell me what the function of this is?
>
> Many thanks,
> Matt Heydon
>
>

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