hi bigrich
The wire you refer to is an alternative fan switch wire. this is for use on radiators that have a thermal switch within the radiator. The donor i used a L reg 220 GTI has the fan thermal switch on the side of the Rad. You should find that you have continuity between this wire and the same colour coded wire in the rear wiring harness that connects via the mems unit to the engine thermal switch. just blank it off if you do not need it
all the best
tony
|