page 97.109 in Bentley, for 87 Digifant ..
clearly shows fuel gauge sender on current track 71 with violet/black wire
going to T14, pin 7.
T14 is the main instrument cluster connection on the right .
Your fuel sender wire will be there, not floating around somewhere.

I can't think of any wires that go to/from the instrument cluster, except
those at T14.
If you have odd wires to or from the instrument cluster,  perhaps someone
has 'modified' something there.

----- Original Message -----
From: "Christopher Nanstad" <shirleyvdub@GMAIL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Tuesday, October 05, 2010 5:04 PM
Subject: "87 Westy bunch of wires disconnected

> Opened up the wiring harness to install relay kit today and found what
> looked like the brake fluid indicator cable with white two prong tip
> disconnected and tucked. Then I started probing and found what looks like
> the yellow thin lead coming from the instrument cluster. Possibly why my
> gas
> gauge hasn't ever worked. Two other mystery white plastic clips w/
> red(thin)
> wires were dangling as well. Got all reconnected but I had a question
> before
> I "fire" it up. Does anyone know for sure if the the third yellow wire off
> of the white plastic cluster attached just behind the gas gauge leads to a
> connect that has a yellow connect and a larger GREY wire. I have yet to
> drop
> my gas tank to see the color of the wire from the sender so I wanted to be
> sure. "the Book" doesn't specify as far as I can tell.
>
> thanks,
> Chris