3-Point Hitch YM2500 Plow Light Wiring

[bmaverick]

Coming off the plow light, there’s a White wire, a Green wire, and a Brown wire.
The Brown wire is a ground.
The White wire is high beam.
The Green wire is low beam.

With the light mounted to the fender, the Brown wire grounded, and the White wire running to a 12v wire on the tractor (with the key on), the light is staying on, regardless if the switch on the light is on or off.

Cap off the green wire. Only use HIGH.

Is the switch in the shell wired to the light wires to the bulb?

 

[RayIN]

Post the make and model of that light.
Right now we must guess. The red backing on the sealed beam on my Massey Ferguson 135 has a purpose. There is also a small clear bulb behind the sealed beam. When it's on it shines through the red lens for road driving.
The switch should be on-off-on/ 3-way switch to turn on either the red lens, off, or clear work light.
The ground is just that, ground, not switched, and is green.

 

[Travis_R]

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Really….green wires are usually ground. And why would the ground go to a switch

I agree. Green wires are usually ground.

The Brown wire (ground) is going to the on/off switch on the plow light.

 

[Travis_R]

Cap off the green wire. Only use HIGH.

Is the switch in the shell wired to the light wires to the bulb?

Yes, the switch in the shell is wired to the light wires to the bulb.

 

[bmaverick]

I agree. Green wires are usually ground.

The Brown wire (ground) is going to the on/off switch on the plow light.

Regardless of the wire color, do you have a volt meter?

We can sleuth the hot to run to the switch. Then the switch to the bulb. The ground then goes to the OTHER side of the bulb. Then run the ground to the chassis. That should be it.

 

[Travis_R]

Post the make and model of that light.
Right now we must guess. The red backing on the sealed beam on my Massey Ferguson 135 has a purpose. There is also a small clear bulb behind the sealed beam. When it's on it shines through the red lens for road driving.
The switch should be on-off-on/ 3-way switch to turn on either the red lens, off, or clear work light.
The ground is just that, ground, not switched, and is green.

I wonder if it could be a defective plow light or bad wiring on the tractor? The switch on the light is either on or off, it’s not a 3-way switch.

I hooked it directly to a 12v battery and it worked fine.

This picture isn’t showing the wires that my light has.

 

[bmaverick]

see the simple wire diagram above. Just cap off the LOW beam wire.

 

[Travis_R]

Regardless of the wire color, do you have a volt meter?

We can sleuth the hot to run to the switch. Then the switch to the bulb. The ground then goes to the OTHER side of the bulb. Then run the ground to the chassis. That should be it.

View attachment 1937991

Unfortunately, I do not have a volt meter. I do have a test light.

 

[Travis_R]

View attachment 1View attachment 1

 

[RayIN]

By the spelling of plough, that is a UK version of a MF work light as it's known in the U.S.A. The wiring might be completely different than a USA work/plow light.
I would return it to Amazon, then buy the correct light instead of a universal light.