Hi all, I have a 2013 Massey Ferguson 5465 tractor which i recently purchased . The air conditioner control in the cab was damaged so i purchased a new one. When i removed the old control unit i found that some one had cut the 5 pin plug from the fan speed switch harness. My problem is i cant find a schematic which shows a 5 pin plug with 5 wires, i have been to my local Massey dealer they can only find a 4 pin and a 7 pin plug, does any one have a schematic or can take a photo of their fan switch plug. Any help would be much appreciated.
Massey 5465 electrical help needed
- Thread starter Buck72
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Zebrafive
Super Member
I do not have the tractor in question, so no pictures 
Does your fan have 3 speeds?
I am guessing, if 3 speeds, one wire for each speed, a ground and 12v wire to make 5.
Sorry I can be of more help.
Does your fan have 3 speeds?
I am guessing, if 3 speeds, one wire for each speed, a ground and 12v wire to make 5.
Sorry I can be of more help.
Zebrafive
Super Member
Then I'll GUESS:
12v in to switch
Then wires 2-5 are out from switch for each speed, 1, 2, 3, & 4. Ground will be at the fan motor.
For a DC motor, I'll guess they used resistor(s) for speed control, except High, which would bypass the resistor(s).
Most likely a coil of resistance wire with a "tap" at 1/3 and 2/3.
Low 12v goes through all the resistance wire coils, then to fan
Next speed, goes into tap at 1/3 of the coils, so it goes through the remaining 2/3s of the coil, then to fan
Next higher speed goes into the tap at 2/3s of the coil, so it goes through the remaining 1/3 of the coil to fan.
High goes direct to the fan.
They may have used a separate resistor (of different values) in each of the lower speeds instead of a coil of resistance wire with taps.
12v in to switch
Then wires 2-5 are out from switch for each speed, 1, 2, 3, & 4. Ground will be at the fan motor.
For a DC motor, I'll guess they used resistor(s) for speed control, except High, which would bypass the resistor(s).
Most likely a coil of resistance wire with a "tap" at 1/3 and 2/3.
Low 12v goes through all the resistance wire coils, then to fan
Next speed, goes into tap at 1/3 of the coils, so it goes through the remaining 2/3s of the coil, then to fan
Next higher speed goes into the tap at 2/3s of the coil, so it goes through the remaining 1/3 of the coil to fan.
High goes direct to the fan.
They may have used a separate resistor (of different values) in each of the lower speeds instead of a coil of resistance wire with taps.