[99grncherokee]

Thanks for the info 35charlie

Ok replaced the relay, picked one up from chrysler dealer. The relay came with large rivets and what appeared to be large 1/4" heavy duty self tapping bolts with detailed instructions. Depending on the manufacturing date of the vehicle would determine whether or not to use rivets or bolts. The instructions also indicated the relay may be behind the "left side" headlight on years after 99, assuming left side is driver side although not sure, this might be a typo? Don't know about that as mine is behind passanger side. The point that I am trying to make here is the instructions were adamant about having the relay properly seated against the metal so that it acts as the heat sink. Judging by the fasteners provided I can see they are not fooling around. My relay had been changed several times and the one I just replaced had only small sheet metal screws holding it down, one of which was stripped. Needless to say I believe this to be the cause of failure. So if you have to change the fan relay, consider the heat path from the aluminum backing on the relay to the steel inner fender, the better the contact the longer the relay will last.

Dave