I hate dealing with wiring issues but I understand the schematics fairly well. For unknown reasons my A/C fuse will blow, after one hour or ten minutes or sometimes when I simply turn it on. I have checked every wire in the console, the switches, the wires to the relay and the compressor. I thought it was the fan clutch but power from the battery clicks it open and close. Thought I might have a grounded wire in the console, nope. I removed the fuse and searched for grounds from the load side of the terminal, nothing. Sometimes it seemed to work with compressor disconnected but that isn’t it. I have spare e3 blower switches (too short for e9 faceplates) to compare, but everything is working now. I know after I put it all back together it will blow again, but when is the big question. The e9 blower switch gets hot on the back sometimes but not every time. No spares of that one. I have an e3 spare if someone needs one and spare temp switches again if someone needs them. And I have chrome bezels but they don’t fit either switch or the Blaupunkt and they look identical, go figure. Most temp switches are SAE thread I believe now, extra fine and the metric bezels are also extra fine thread pitch. Time for a beer.