Mercedes Benz repair: need help for mercedes please, mercedes 300se, trough the wire


Question
dear sir
 I have a mercedes 300se model 1990. air conditon is not working,i checked fuis and gas plaesure they are all ok. I also checked the compressor wire and found out that there is no electric power running trough the wire, do you have any idea what is wrong in it,please guide me for that
by the way i can't find where is a relay placing in the car?
i was searching for it but couldn't find it.
waitting to hear the answer from you as soon as posible

regards
nader

Answer
you will have to find where the wire runs to or the plug adapter goes through chances are it is harnessed to another wire, theen check the fuses,
http://www.benzworld.org/forums/w140-s-class/1438358-aircon-not-working-ec-light...
check out this thread may help you out