[urq] Coolant Temp Gauge install

[Daniel Jones]

Hey Justin,

When I did this swap last summer on my 85 I had to swap a pin in the 10-pin
connector on the back of the instrument cluster. There should be a
blue/brown wire that needs to move to pin 5 on the connector. This way the
signal is routed to the gauge instead of the warning light on the printed
circuit. Also check the 2 pin sensor on top of the coolant flange. If the
two wires are blue/brown and blue/yellow you are all set. My car already had
the correct temp sensor from the factory.

HTH

Daniel Jones
85 urq
91 200q20va
98 a6qa

-----Original Message-----
From: urq-bounces at audifans.com [mailto:urq-bounces at audifans.com]On
Behalf Of Justin Riley
Sent: Monday, November 29, 2004 11:03 AM
To: urq at audifans.com
Subject: [urq] Coolant Temp Gauge install


This long weekend I had the time to pull the instrument cluster and fix
my broken odometer.  JB Quick solved the split gear slipping problem and
my odometer now registers miles.  While I was in there, I decided to
remove the stock boost gauge, and replace it with the temp gauge from a
4000q.  Cleaned all contacts,  freed up the adjuster for the fuel gauge,
and removed the bulb from the blue (cold engine) light.  All back
together, I drove it to the gas station this morning, filled up ($45
worth of Premium 93).  My fuel gauge now goes all the way to full.  (So
2 problems fixed)



My newly installed Coolant Temp Gauge does not register anything at all.



So I checked the connections at the back of the head, they look clean.
I tried grounding each connection, but no joy.



I cannot find my Bentley at the moment to trace wires.  Any suggestions
(or Copies of the applicable wiring diagram sections) appreciated.



-Justin

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