[911M491]

Discovery bad reed switch and secondary coil relay in 88 911 with manual system. All blowers test and fuses good. I replaced the secondary coil relay with a radio Shack 6pin dpdt mini relay. I jumped the reed switch. Footwell blowers on all the time regardless of engine heater levelers position. I want to turn the fw blowers off when not using the engine blower. Any suggestions? Manual switch. Change 0 to really mean off.?