I have a 1990 300CE.
My A/C and blower motor stopped working yesterday.
The A/C does not turn and neither the blower for outside air.
I checked the strip fuse 30Amp, was OK, I still replaced it but
still no luck.
One thing I had soldered a resistor on the temperature switch
to make the fans come on earlier and it did.
I got the exact resistor that was a special order from Radio Shack.
This is the web site: http://pages.prodigy.net/jforgione/MB_S500.html
where I got this info from.
I took the resistor out but still no luck.
The A/C does not turn on either.
All of this died at the same time.
Any ideas.
bshah@satx.rr.com