reinstalled at the same center location as shown in fig1 c in these new positions any letters on the knobs will not likely be visible and the user will quickly adjust to the new positions of the mode and temperature control levers 28 32 the blower or fan knob 59 should also be reinstalled the fan or blower switch connection 60 on the wiring harness 56 should also be connected to the fan or blower switch 30 on the back of the control panel 26 as indicated in fig1 once connected at all the relevant locations the wiring harness 56 should extend from the dash d for connection to the control panel 26 which is then re positioned within the dash d and secured with conventional fasteners in its original location as shown in fig1 following completion of the control panel installation additional components are also installed to obtain a functional system for example the original fuses are upgraded air inlet and heater motor opening block offs may be installed new water drainage and heater hoses are connected and a firewall block off may be installed the new evaporator and blower fan are installed and interconnected with the electrical control assembly 22 having an ecu or electrical control unit 62 via the wiring harness 56 an electrical.