[richtazz]

All three harnesses unplug. The blower motor speed switch is an 8 cavity (with only 7 wires) and the locking tab is toward the outside of the control (to your left if your looking at the front of the control head reaching around). The center plug is a 12 micro-pin connnector (the lock tab is on the bottom) and the mode switch has a 3-wire electric plug with the connector toward the center of the control (again to the left as viewed from the front), as well as the 6-valve vacuum harness attached to it which has 2 locking tabs, one at 10:00 and one at 4:00 as viewed from the front.