THEN YOUR MANUAL IS WRONG , THERE IS SUPPOSSED BE AN AC HEAT RELAY IN THE FUSE BOX UNDER THE DASH ON THE LEFT KICK PANEL, IF I COULD FIGURE OUT A WAY TO GET THE PIX FROM THE MANUAL THAT I HAVE I WOULD POST IT , IT IS THE FACTORY WIRING MANUAL AND THE PIX IS AS CLEAR AS CAN BE , THERE ARE THREE RELAYS IN A ROW THE ONE CLOSEST TO THE FRT LEADING EDGE OF THE FUSE BOX IS FOR THE REAR DEFOGGER THE MIDDLE ONE IS FOR THE PWR WINDOW AND THE ONE CLOSEST TO THE DOOR EDGE IS FOR THE HEATER /A.C CONTROL., THERE IS A SMALL DIODE BETWEEN THE RELAY AND THE OUTER EDGE , JERRY