Added 12 volt lights to my M105

[Happyland1410]

I decided to add a set of 12 volt lights to my new M105A2 so that I can tow it with my F350 but still leave all of the 24 volt system in place for towing it with my deuce.

I simply made some brackets out of 1 1/2" aluminum angle which were bolted to the existing light brackets. I purchased 12 volt lights with a metal housing so that I could paint them (gloss black just didn't look right). I also purchased a 4 pin flat trailer wire kit so that the 12 volts lights use completely separate wires and a separate 4-flat trailer connector. Since these lights ground through their base I also ran a separate ground wire from each base back to the frame to ensure a good connection. The ground wire from the pigtail is also grounded to a frame screw at the front of the trailer.

FYI: The lights were $6.38 each and the wiring harness was $11.97 at Walmart.

With some effort I also got the lunette broke loose so that I can flip it when towing with the F350.

Here are some pictures of the lights:

 

[hwcurtice]

Looks great. Gives me some ideas for my M101...

 

[4x4e350]

Great idea! I may have to do something similar, when I get mine.

 

[rosco]

I used LED's - they are multi-voltage. But another light problem is that they are required to have clearance and the 3 bar marker lights on the rear, if the vehicle is over 80" wide. That is not something that you can "grandfather" in.

 

[Nonotagain]

I used LED's - they are multi-voltage. But another light problem is that they are required to have clearance and the 3 bar marker lights on the rear, if the vehicle is over 80" wide. That is not something that you can "grandfather" in.

I ran into that problem with registering my M105A3 trailer.

When the Military had the trailers built, they used a three light trio in the rear. The problem is that due to the 80" requirement, I had to install lights on the fenders as well as marker lights up front.

I already had changed the bulbs on the trailer over to 12 volt, so I mounted a set of over 80" LED tail lights under the rear of the fenders which met the requirement for the width issue and installed amble LED marker lights at the front of the trailer box.

My M105A2 trailers, I never ran into a lighting issue with so they still in the same condition as Uncle Sam operated.

I didn't hack into the wiring harness. I made up a 12 pin connector and spliced into those wires for the new lights.

If you run into the back of this trailer while the lights are on you must be legally blind.

 

[Old Lincoln County Iron]

Nice set up! Its kinda like some of the semi trailers having two lights systems for military or
civilian tractors. Versatility! I'll probably do that with the two M101A1's I just won.

 

[Jimma]

Cool deal. I think I will try something like that with mine.

 

[mistaken1]

Nice work.

 

[Happyland1410]

Since I now have 12 volt lights I put my trailer to work today. Not much of a load but it worked great for picking up 16 sheets of drywall. The flipped lunette almost leveled the trailer with my F350.

 

[davidkroberts]

I did something similar with a m101 i had. I was using it so much with my civilian vehicles i went ahead and mounted a set on. I saw walmart had a set of LED trailer lights and I was thinking about wiring them into the bullet connectors as a replacement and wiring a 4 pin connector to the stock wiring harness for a dual voltage system but only one set of lights has anyone else tried this?