Doo, Ive got part # 89GG 18B647 AB here and the prongs are the same, but it doesn't have the mounting bracket and its bigger than my original??

My original one is definately 89BG 18B647-AB

The internal fans don't work with this one either, so Im thinking it maybe the other switch as that has the on/off function attached. Has anyone got a wiring diagram so I can test wires???

Cheers