I replaced a faulty pre-glow wiring relay with a manual system which solved electrical charging issues I had.

Now, however I have a non-functioning temperature unit in the instrument cluster. That makes sense because the wiring for the cluster goes through the glow plug relay.

My question is: Does anyone know how the reattach the wiring from the temp sending unit on the side of the block to the instrument cluster so the temp guage will work?

There are actually two temp sending units on the side of the block. I believe the one toward the rear of the car is the one controlling the temp guage.

The small plug originally attached to the relay is available to attach the temp sending unit but the relay muts have changed the signal to the unit or something.

Anyone know?

Thanks.

__________________
Rev. Dr. G. Church of the SubGenius
It doesn't take a genius

I would not expect the relay was a functional part of the temperature sensor other than to sense the time to activate the glow plugs. Since you have wired up some other circuit for the glow plugs why just not leave the relay in the socket if it is now isolated form the glow circuit? Temperature gauge should operate then.

Barry, I put the old relay back on the wheelwell pluged in the wires and the temperature guage came back to life.

I bought and installed a manual relay for the glow plugs and it took care of all previous battery charging issues. So it's all fixed. Thanks for the idea.

__________________
Rev. Dr. G. Church of the SubGenius
It doesn't take a genius