Massey Ferguson 50 Gage wiring schematics

On the gauge back, one post would be sender. Other post is energized with the key switch on gas tractors, or by the oil pressure switch on diesel tractors. Sending unit also needs a good ground. To test the gauge, energize the hot post, ground the sending post. Gauge should read full on MF tractors.
 
Thank you... I'm also replacing all my gages, therefore getting rid of my old oil pressure gage and changing to electric sending unit. Any recommendations?
 
I would stay with the mechanical temp and oil gauge. Keep the heavy duty steel oil line instead of the plastic stuff.

Tractor gauges are also designed for outdoor use more so than automotive gauges.
 
Here's a cartoon version of something ptfarmer sent me a couple
years back. I used it today. It's for a diesel.
a266179.jpg
 

I'm in need of a schematic for the MF50 deisel. Wires are in bad shape and the keyed starter has been replaced with a pushbutton start as well as a pushbutton heat switch.

The ammeter has a wire connector on one post, but the wire has been torn/cut off.

Generator tested good and has been serviced, but battery won't charge. Could it be caused by the missing wire from the ammeter?

Also, NO lights are wired up, (dial/gauge or head/work lights), so I have to drive with a flashlight in the dark.

Thanks everyone
 
I'm in need of a schematic for the MF50 deisel. Wires are in bad shape and the keyed starter has been replaced with a pushbutton start as well as a pushbutton heat switch.

The ammeter has a wire connector on one post, but the wire has been torn/cut off.

Generator tested good and has been serviced, but battery won't charge. Could it be caused by the missing wire from the ammeter?

Also, NO lights are wired up, (dial/gauge or head/work lights), so I have to drive with a flashlight in the dark.

Thanks everyone
 

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