Only 1 Plow Light works

Sealer People · Dec 30, 2016

HI everyone, thanks in advance for any replies.

I have a 5 year old Fisher MM2 8ft straight blade, on a 2011 F350.

When I plug in the plow to the truck, only 1 of the lights work.
I changed the bulb and still doesnt work.
- one of the truck lights turn off as well on the opposite side however.

When the plow is Unplugged,,,, the truck lights are just fine.

My Ford dealership says its something to do plow side.

Any ideas ?

dieselss · Dec 30, 2016

3 plug with iso module? And how many plugs at iso

1olddogtwo · Dec 30, 2016

It's going to be a 3 plug.

As far as the lights being opposite, it's just the way the harness was around you had a fifty-fifty chance that the right socket match the right socket.... In the end, really doesn't matter

I am willing to bet the problem is in the socket that connects to the truck wiring itself look for a bad ground/ connection point at the plug

thesnowman269 · Dec 30, 2016

If it is a 4 port ISO module. It is the ISO module

Only 1 Plow Light works

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