c20seh wiring ( blue wire )

[mex]

i have a blue wire coming from my corsa loom and nothing to connect it to on my c20seh engine loom, there is no blue wire on the cavalier loom.
where does this go as i think its the coolant temp sensor
cheers

[swedge]

The blue wire is usually the sensor for the temp gauge not the coolant temp sensor

[mex]

oh right, do you know where it needs to connect to on the cavalier loom or woild it be best to follow it from the engine block to the loom and connect it up.

[swedge]

you can run a wire from the temp sensor on the cylinder head straight to the blue wire on the back of your clocks as its just a resistance sensor