hello i have done the xe conversion i have left the original ecu in like i got told, the car starts and runs but i have no temp guage the rad light is on dash and the engine cooling fans runs constantley, this is how i have got it wired up, we cut the plug from original engine astra harness, we tapped the astra senser in the thermistate houseing
then we ran the wires from the temp senser to the left hand ecu plug looking from passenger wing, the colours are red and brown, and one black which we have put the black on a switchable live not sure if this is right? ,we then ran the red and brown wires on senser to the ecu but there is 4 red and brown wires in the ecu harness, we have tryed connecting to them all one by one with no joy at all.
the square plug at the top of engine going into original astra harness
we have 2 spare wires coming off it do we use these the colours are white and black and black
please help i am there just stuck on fans and temp guage now then the car is finished thank you for reading frankie