The only help I can offer is telling you that the LED blinks and gauge
goes to hot if the coolant level is low.

Sounds like a fun project. You'll feel great when you get it to work. :-)

2009/10/23, neil n <musomuso@gmail.com>:
> Hi all.
>
> Am pulling my hair out wiring in a low coolant level sensor. Got it
> all in, but light just blinks.
>
> Though the '85 WBX gauge/LED unit fit in, it dawned on me that the
> foil circuit on my *air* cooled instrument cluster is different than
> the WBX. I wired the low level warning controller as per a 1.9 WBX.
> Likely I should wire things as per the diesel, which may mean no low
> level coolant warning light.
>
> I chose this route as I wanted to rebuild my spare '85 cluster and use
> the air cooled (and keep the analogue clock) in the meantime.
>
> Are the WBX temp gauge and Diesel temp gauges the same?
>
> Is it likely that my '81 air cooled instrument cluster foil is "wired"
> as per a diesel?
>
> Much TIA. I have so little hair left to pull out!  ;)
>
> Neil.
>
>
> --
> Neil Nicholson '81 VanaJetta 2.0 "Jaco"
>
> http://tubaneil.googlepages.com/
>
> http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engines
>

--
Chris S.
Disclaimer: "Death and serious injury may occur"