A C Trinary Switch Wiring Diagram For Cooling Fan

In the vintage air diagram you will see that the blue wire on the trinary switch is used to ground switch the coil of the cooling fan relay.

A c trinary switch wiring diagram for cooling fan. The trinary switch does that. If the original trinary switch terminals are different a four wire boot connector part number 35900 can be used. Refer to packing list for actual parts and quantities. When the pressure of the refrigerant in the system exceeds the set point of the trinary switch it will close its contacts and connect the fan trigger to ground.

It shouldn t be too hard to determine where to connect the trinary wire. Steel chassis 10 steel chassis 16 ground fan ground t e m p s w 18 10 steel chassis to a c compressor from a c thermostat rad fan sw rad fan sw ac clutch sw ac clutch sw. A trinary switch will allow your electric fan to turn on and off based on either engine temperature or ac system demand. Images may not depict actual parts and quantities.

35532 vug 35533 vug 11076 vus description fitting 8 90 with service port fitting 10 90 with service port trinary switch female checked by. Keep your engine and yourself cool by wiring a switch into your american. Radiator a c condenser oil. The electric cooling fans are designed to force air through the core of a heat exchanger i e.

Ford or gm pcm with power lead for engine cooling fan 30 85 86 87 87a blue blue red red red purple white white black ground battery auxiliary blue 12v key on ignition source 12v battery or ignition source pcm cooling fan power lead blue black green dark blue black green. Purple a c switch. Using a trinary switch to turn on the radiator tm c 2014 temp sw cooling fan when air conditioning is turned on cooling fan thermostat or temp switch 30 amps max or. Vintage air 18865 goll st.

San antonio tx 78266 p. Optional wiring switch a c trinary gray wire chassis ground manual operation optional fan switch 12 volt 12volt electric fan. Maybe somebody could post it or a link. All you need to do is wire the trinary switch output to the fan relay s for full speed.

I don t have the schematic for the spal controller but it may have been posted here previously. Terminal 1 black wire to compressor clutch terminal 2 black wire with white stripe to ac thermostat terminal 3 yellow wire to fan clutch or shutters terminal 4 orange or red wire to power.