Drawing Number 1-A257501C Circa 1967. Will run on inspect, if on auto if opens fuse 4. Have looked for the obvious coils that may be shorted. We have removed the feed to the door operator, to the hall and car call circuits. It appears to be a coil in the auto circuit. Have pulled all the wires on C65 and found the one that opens the fuse. It is a controller wire and it is grey just like all the others. However, with that one wire off, nothing will energize and we will not run on inspect. Going broke trouble shooting this. Looking for any ideas, to help find the culprit.