Use a multi-meter to test output at the sender.  One pole is simply
open/close, the other a variable resistance.  You can also verify the
ground from sender to the block.
Gee, I was thinking of upgrading my JCWhitney gauge to VDO, maybe not....
                                                            Jay

Tobin Copley <tobin.copley@UBC.CA>@gerry.vanagon.com> on 06/26/2002
01:35:26 AM

Please respond to Tobin Copley <tobin.copley@UBC.CA>

Sent by:    Vanagon Mailing List <vanagon@gerry.vanagon.com>

To:    vanagon@GERRY.VANAGON.COM
cc:
Subject:    Re: Wiring/testing of VDO oil pressure gauge (dual sender)

On Tuesday, June 25, 2002, at 02:57  PM, kdlewis@juno.com wrote:
> Tobin;
>         Did you remove the wire from the sender or the gauge? If you
> remove the wire from the sender then it is shorted somewhere along it's
> route.
>

Ken, I thought of that.  First tried removing the wire at the
sender, then from the gauge.  Same difference--gauge needle
stays rock solid at "0".

:-/

T.