Timer for one or two Compressors delay. The part has two independent connections for each compressor. If the machine has one compressor, connect this timer for one compressor. When there are two compressors in the machine, both compressors can be connected to the same part for two separate connection pins. See large image. Please make sure that the diagnosis of malfunction is correct. Electronic parts are not returnable. The two extra fast lock pins for 2nd compressor do not need to be connected. wire n One compressor timer is separate part. The sale of electronic parts is final.