The previous owner of my '75 removed the heater a/c controls and replaced them with a couple gauges. Now the car is mine and I want the heater back.(it gets amazingly cold in the desert). So besides the heater core needing to be changed, i needed a control. I got one off ebay that was for a '76. It's in good condition and has the same electrical connections. The only problem is the vacuum hose block from my car is not the same configuration as the one on the controls. So, does anyone know where each hose is supposed to go(the ports on the controls are numbered)? Or if I can get a new vacuum block? In which case I would still have to know where each hose goes. Thanks.