Gmilburn
Member III
The previous owner of my E29 had disconnected the Water Temp gauge for the Universal A4--as he believed it had a short. I have searched the web for a wiring diagram for the four terminals on the back of the gauge--with no luck. I actually tried to remove the gauge from the panel but it seems to be corroded in--and I was unsuccessful, with even gently using a pipe wrench to twist it out. Sooooo, before I tear it up getting it out and rebuilding another control panel, I wanted to try one last time to salvage the gauge.
There are four posts--and Im sure one goes to the temp sending unit from the A4--and one goes to positive and one to negative. But which is which? And the fourth post?
If anyone knows how I might hook it back up to test it--Id appreciate it. Otherwise I will have to tear it out, order a new gauge and sending unit from Moyer Marine and start fresh.
I've enclosed a couple pics to assist in the endeavor.
Thanks in advance.
There are four posts--and Im sure one goes to the temp sending unit from the A4--and one goes to positive and one to negative. But which is which? And the fourth post?
If anyone knows how I might hook it back up to test it--Id appreciate it. Otherwise I will have to tear it out, order a new gauge and sending unit from Moyer Marine and start fresh.
I've enclosed a couple pics to assist in the endeavor.
Thanks in advance.