How are you guys doing I was wondering if anyone could tell me where the aux fan relay is located on a 1992 300 sl.I replaced the radiator a few years ago and a new clutch fan and thermostat,the expansion tank has a slight leak when the car is hot and a few drops come out at the joint between the top of the bottle and the bottom.I will be replacing the bottle Sun.I hope that fixes the problem.The problem is at 90 degrees the car runs normal cruising but in stop and go traffic the temp goes from 85 c to 100 pretty fast never goes above 105 or so but it worries me.I hope the slight leak is the problem.Thanks for any input.Peter