specializing in “AIR CONDITIONING, PARTS AND SYSTEMS” for your classic vehicle PERFECT FIT SERIES” IN-DASH HEAT/ COOL/ DEFROST 1971-73 MUSTANG CONTROL & OPERATING INSTRUCTIONS The controls on your new “Perfect Fit” system. Offers complete comfort capabilities in virtually every driving condition. This includes Temperature control in all of the modes. This system also provides the ability to blend the air between Heat, and Defrost modes.
CAUTION: ALL OF THE OUTSIDE VENTS MUST BE CLOSED WHEN THE SYSTEM IS IN THE A/C MODE. THIS WILL ALLOW THE A/C SYSTEM TO FUCTION AT ITS MAXIMUM PERFORMANCE LEVEL. THE FOLLOWING SUMMARY WILL DESCRIBE EACH OF THE CONTROL LEVERS FUNCTION. FAN SPEED SWITCH: There are 3 speeds plus Off. When the switch is in the off position it will disconnect the 12V power to the Blower Motor and the A/C Clutch. This will shut down the entire system.
specializing in “AIR CONDITIONING, PARTS AND SYSTEMS” for your classic vehicle INSTALLATION INSTRUCTIONS 1971-73 MUSTANG Congratulations! ! You have just purchased the highest quality, best performing A/C system ever designed for you Classic Car. To obtain the high level of performance and dependability our systems are known for, pay close attention to the following instructions. Before beginning the installation check the box for the correct components.
YOU CAN NOW BEGIN THE INSTALLATION Remove Glove box, Radio (with bezel), center console if equipped, set aside for reinstall. Retain original hardware. CONSOLE RADIO / BEZEL GLOVE BOX Removal of the Original Heater Assembly can be accomplished by disconnecting the two control cables. One attached to the Temperature door. Electrical harness Disconnect electrical harness. Temperature door One attached to the Heat / Defrost door as shown.
Attachment Screw Discard Locate on the passenger side and remove the following components. Fresh air inlet box, Fresh air transition duct, and the Push Pull cable. Discard along with all of the hardware. Air Inlet Box Discard Remove attachment screw and clip located in front of air inlet. (3) #10 Nuts / Discard Fresh Air / Transition Duct / Discard On engine side of the Firewall remove the (4) screws as shown. DRAIN COOLANT FROM RADIATOR. Remove Heater hoses from heater coil at firewall.
Remove control head. Disconnect control cables, and blower switch , discard. Retain all of the original hardware. Remove the complete Heater Assembly and discard. Locate on the drivers side the Fresh Air Inlet Box. Locate the transition duct between the inlet box and the louver in the Instrument Panel. Remove transition duct only and discard. NOTE: Drivers side air inlet box is same as passenger. Reference picture page 3.
Picture to the right shows center louver as it will later be installed. In order to install the louver properly the pocket in the Instrument Panel above the gauges needs to be modified as shown in the picture below. Open the back wall as large as possible. Locate original wiring harness that was connected to the original blower switch. From the plug cut the brown wire and attach a ¼” insulated male spade connector.
All modifications to the vehicle are complete. You can now begin installing your Classic Air “Perfect Fit Series” System. Locate the original control head. In the control sack kit you will find the control switch mounting bracket. Attach bracket using original screw that holds rear section of control head to the front section. Locate the new Blower Switch, and (2) #6 x 3/8” Pan Head Screws. Attach switch as shown below. Locate knob in control sack kit and install over switch shaft.
Locate in the control sack kit (2) cables. Longest one is for the Temperature lever . Attach this with (1) #8 x 5/8” pan head philip screw and the cable clamp provided. Short cable is attached to the mode control lever. Hold cable over edge of the control head as shown below. Mark and drill a 1/8” Dia. hole and attach the cable with (1) #10 x 5/8” pan head philips screw. CABLE CLAMP Drill 1/8” Dia hole. Set aside for later installation. ¼-20 J-clip Locate the Inlet Block off Plate.
Locate Defrost Duct Adaptor from the Hardware Sack Kit. Place over the defrost duct that was previously modified. Attach using (2) #10 x ¾” hex washer head tek screws. Locate Evaporator. Slide evaporator up into place behind the glove box opening. From the engine compartment attach the evaporator using ¼ - 20 x 5/8 hex head screw with ¼” washer through the 9/32” Dia. hole previously drilled. Behind glove box opening attach the blower support bracket as shown.
Attach with (1) ¼ - 20 x 5/8” hex head screw into the J-clip previously installed. Behind the J-clip you will find an additional hole in the support bracket. Install a #10 x ¾” hex washer head tek screw through this hole and into the cowling. Locate in the hardware sack kit the evaporator Support Bracket. Remove bolt from the instrument panel support brace and slide Support Bracket behind and reinstall the bolt. Attach other end of the bracket to (2) 1/8” Dia.
Locate the Water Valve and (3) worm gear clamps. Supply line from the engine is attached to the lower heater hookup tube. Cut 6” off the end of the return line and install the water valve using (3) worn gear clamps as shown above. See technical data sheet on page 22. Note: It is recommended that you replace heater hoses from the engine to the hookup tubes. Locate the ½” Dia. x 6” long piece of clear drain tube. Insert through 5/8” Dia. hole previously drilled and attach over drain nipple on the evaporator.
BLUE WIRE FROM BLOWER SWITCH BLUE WIRE TO THE THERMOSTAT Locate wire harness from the evaporator electric actuator and attach to the (2) micro switches. Refer to the wiring diagram on page 21. Attach Wire Harness supplied in unit to the blower switch. Route harness through the control opening. Attach wire harness to left micro-switch on the Defrost Duct assembly. Route the harness across top of the unit and hookup resistor, and blower motor.
Route longest of (2) cables that were attached to the control head, around behind evaporator assembly and out through upper hole that original heater was fastened through. Attach this cable to the water valve. Set control lever in the Cold position and be sure that the water valve is closed. Locate insulation tape and seal around cable at firewall. Route shortest of (2) cables and attach to the defrost / heat duct. Insert cable into second hole from the bottom.
Locate the 2 1/2 “ Dia. flex hose. Find (1) piece 2’ long. Attach to the face duct over the left outlet as shown on the picture at bottom of page. 2 ½” Dia x 2’ Route hose up through the hole previously cut in instrument panel above the gauges. Locate the Center Louver and attach duct hose as shown. Carefully push louver assembly into the opening. Locate the 2 ½“ Dia. flex hose. Find (2) 3’ pieces. Also locate the (2) louver adaptors from the Hardware Sack Kit.
2 ½ “ x 3’ flex hose 2 ½ “ Dia x 3’ flex hose Louver adaptors Passenger outlet. The second of the flex hose assembly attach to the side outlet of the face duct assembly. Route up and behind instruments and over to drivers outlet. Install over drivers outlet. Refer to the picture above. Reinstall the Radio (and Bezel) and the center console if equipped utilizing original hardware. Locate the New Glove Box supplied in kit. Slide through opening as shown.
Caution: Carefully check under the Instrument Panel for all cables, electrical harness, or Flex Ducting that might interfere with the safe operation of the vehicle. Make sure that you cycle the Windshield Wipers to insure proper clearance of mechanism. INSTALL THE COMPRESSOR AND MOUNTING HARDWARE USING INSTRUCTIONS SUPPLIED WITH KIT. BE SURE THAT COMPRESSOR IS INSTALLED WITH FITTINGS 90 Deg. FACING DRIVERS SIDE FENDER. Remove the following components Center Hood Latch Assembly, and the (2) horns.
Slide Condenser Assembly into place as shown. The lower attachment locations should line up with holes already in the radiator support. Attach using (4) #14 x ¾” tek screws. Tighten all screws. Locate dimple in radiator core support just to the left of the opening for the tubes to pass through on the drivers side. Drill a 3/16” diametre hole using the dipple as the center. 3/16” HOLE Locate the Liquid Tube, and the Discharge Tube.
Locate tube support bracket, spacer, (1) #10 x 1” machine srew and nut. Attach bracket over tubes. Insert screw through bracket, spacer and then through previosly drilled hole. Attach using the #10 nut. Locate Hi / Low switch and electrical boot. Attach this to the drier using a few drops of oil on the connection. Route wires along the discharge tube into the engine compartment. Reinstall the following components: Center Hood Latch Assembly and (2) horns.
Locate the Suction Hose. The hose has (2) 90 Deg. fittings pre-attached in the correct position. One of the ends has a service port, this should be attached to the compressor. The other end will attach to the suction tube coming from the evaporator assembly. Use #10 o-rings and apply oil before attachment. Tighten all fittings. Suction hose Liquid hose Carefully route liquid and suction hoses Locate female bullet connector that is supplied with the Hi-Low pressure switch.
THE ENGINE COMPARTMENT OF YOUR SYSTEM IS COMPLETE. THE UNIT IS READY FOR EVACUATION AND CHARGING. THIS SHOULD BE DONE BY A QUALIFIED AND CERTIFIED AIR CONDITIONING TECHNICIAN. NOTE: COMPRESSOR IS SUPPLIED WITH THE CORRECT OIL CHARGE. DO NOT ADD OIL TO SYSTEM. 134a SYSTEMS 24 oz OF REFRIGERANT Recommend that power fuse is 25 amp minimum.
IMPORTANT CAUTION: WATER VALVE MUST BE INSTALLED PER THE INSTRUCTIONS. Classic Auto Air has done extensive testing on the correct method to install the water valve in order to get a repeatable and progressive temperature control. Locate the bottom connection from the evaporator/heater unit off of the firewall and attach a 6” piece of 5/8” dia. heater hose with the supplied hose clamp.
