I bought a new temp sensor, it has 2 wires a black one and a yellow one. Which wire is for what? Does the sensor get ground from the block or what? No I dont have an original temp sensor, nor do I have original wiring, so I cant tell from that. Any ideas? I tried different variations with my temp gauge, but nothign really seemed to work.

 

same idea here, i gave my old heads away and it had the temp sensor on them, i will need to rig one up, id like to know how to do this, but i also have a temp gauge in the car, so i need to know how to get it installed to that.

 

That is a coolant temp sensor for the ECM. It has nothing whatsoever to do with the gauge, except that they both happen to be immersed in coolant.

I can't begin to guess whether that would work a gauge. Somehow I rather doubt it though.

You are correct about its wiring, the black wire goes to ground, and the yellow wire goes to the ECM.

A temp gauge sending would have one terminal, and a dark green wire will go to it.

 

DOH! I never thought about that. Crappity Craptastic. I will have to get a new one then.