the air compreser stoped kicking in, have good pressure on the coolant, on 1994 Ford Escort

is there a relay that needs to be replaced, if so where would it be located?

Asked by for the 1994 Ford Escort
you have a low and possible ahigh pressure switch that controls clutch operation. ck 1st to see if there is pwr at the compressor
thanks man, i'll check this out.. did buy a relay switch in the mean time will install it today, i will still check out the pressure switch.. thanks again for your help