Cool Harness!!!

My 1990 2.6 190E was running hot under the same conditions as yours, not so long ago! Followed some of the postings here, tested my coolant switch (shorted with screwdriver while running procedure I used is below) It worked fine, sent signal to the RELAY. Next was the relay, bingo it was bad/OEM Circa 1990( when I shorted the coolant switch the relay clicked but NO HIGH SPEED FANS)! Got a new one $28.00 w/fuse worked and the fans came on at 107 DEGREES, GREAT! Here is the best part, after reading a post on in this forum come to find out a fella here sells a COOL HARNESS/plug and it fits right on top the coolant switch, it kicks my highspeed fans on at 92 degrees!! I live in LAS VEGAS the DESERT and it runs Coooool as the winter at around 80-90in all HOT 100+ weather and traffic.
HERE IS THE LINK:
http://pages.prodigy.net/jforgione/mb_s500.html

Nice guy to deal with, sends instructions, its made with OEM MERCEDES plugs and has a 90 day warranty. Hope this helps!

I only hope it will work on my 1995 C280?????