In a Syncro, that fuel tank sender ground point is back in the engine
compartment, below the ignition coil, on a bolt with some other grounds
as well.. There is a small bundle with 2 brown wires ending in a ring
connector. One of the 2 browns is the ground for the fuel sender and the
other is the ground for the 3 diff lock connectors that all Syncros
have. The fuel gauge wires and diff lock wires are together in a
separate small bundle by themselves as part of the wiring differences
between a Syncro and 2wd.

I have seen that engine compartment sender/locker ground get messed up 2
ways. One was in an engine conversion where it's purpose was not known
and the ground was not reconnected. The other was in an effort to get
the driveshaft decoupler switch wired in by an improper splicing under
the Syncro instead of locating the existing connector. That decoupler
connector can be a bear to locate.

By the way, if you look at page 97.109 of the Bentley there is an
asterisk and note describing the location of the Syncro fuel sender
ground point. This is the 1987 main diagram but for some reason the note
is missing from all other year diagrams.

Mark

Kim Brennan wrote:

> ... I was underneath the GoldBrick today trying to
> figure out where the ground line went for the Fuel Tank sensor (Bentley
> says front left cross member...but I'm sure it is different on a
> Syncro.)