hello herald.i,ll have a go at that modification when i,m next at the truck.i think the fan was spinning slowly no matter how hot the truck got ,but the guys would shut it down as soon as the light came on. is the module easy to identify as it may be the next thing to change if i still have problems. the customer is happy enough to run the truck with the fan at full speed but it can,t have helped with the brackets breaking !! and it good to see something fixed properly. cheers mate