Ac Trinary Switch Wiring Diagram

Click for additional views trinary switch wiring harness with 4 wires 28 long this part is warranted to the original purchaser for up to one 1 year from the date of purchase unless otherwise indicated.

Ac trinary switch wiring diagram. Also below is the internal schematic for each of these switches. One of the blue wires connects to ground. Four seasons trinary switch part numbers are 35889 and 35901.

Either of the blue wires will work for this ground connection. All you need to do is wire the trinary switch output to the fan relay s for full speed. Vintage air 18865 goll st.

Internal schematic for each of these switches aug 14 the trinary switch does that. Terminal 1 black wire. Because you have a trinary switch the ac relay setup they show in their diagram is unnecessary.

These are the contacts for the cooling fan. Red dot 71r trinary pressure switch 71r trinary switch normally open female thread 7 16 x 20 thread. 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.

Jan 13 i was looking at the wiring diagram for your radiator fans on the be cool website. If the original trinary switch terminals are different a four wire boot connector part number 35900 can be used. Using a trinary switch can improve system performance extend the life of the radiator fan and in this case simplify the wiring substantially.

Shown below are the terminal positions typical wiring colors and usage.