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M1102 - Wiring Problems

dvdkea

New member
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0
1
Location
Albany, NY
I am in the process of converting my 1102 trailer over to 12v. I am following the post below and i have everthing working except for the running lights. When i hook the brown wire from the 4 wires coming off of the truck to the solid red wire I get no running lights al all. Even the running light on the truck go off. When the trailer plug is disconnected, the running lights on the truck work fine. I tried to connect the brown wire up to all the other remain wires and i get nothing. I have not replace the 24v running lights with the 12v number 96 bulbs yet. as far as i know, they should work on the 24v bulbs, but will be dim.

Any ideas?

If you have a military pigtail coming off your trailer, here are the color codes that correspond to the wire circut numbers. The wire colors are the indiviual wires that are INSIDE the outer black rubber insulation.

24-484
22-461 LEFT TURN/BRAKE RED WITH WHITE TRACER
24-483
21 MARKER LIGHTS. RED
23
90 GROUND BLACK WITH RED TRACER
22-460 RIGHT TURN/BRAKE BLACK
37
 

ryan77

Well-known member
2,584
56
48
Location
Cary IL
Why dont you just put new bulbs in and buy the plug adapter off ebay instead of hacking up the wiring???
 

dvdkea

New member
9
0
1
Location
Albany, NY
i agree, i should have just gotten the adapter and lelf the mil plug in place. But, i dident. i cut it off and replaced with a standard civ 4 wire setup.

Again, everything works except the marker lights. when i connect the red wire from the trailer as mentioned in the article to the brown wire from the truck, the marker lights on the truck go off, and i have no marker lights on the trailer either.

any ideas?
 

emmado22

Moderator
Super Moderator
Steel Soldiers Supporter
7,058
147
63
Location
Mid Hudson Valley NY
Cutting the harness was a bad idea, as all the wires are tagged with metal marker bands as to what they are. time to break out the multimeter and start tracing wires. Where exactly did you cut the harness? take a pic and post it, all hope may not be lost.


There are only 4 wires you need. All the others, forget about, as they are BO lights.


Civilian trailer wiring

Green wire = Right turn/stop light
Yellow wire = Left turn/stop light
Brown wire = Tail/marker/running lights
White wire = Ground




Military harness circut # and Pin
22-460 Pin J = Right turn/stop light
22-461 Pin B = Left turn/stop light
21 Pin E = Tail/marker lights
90 Pin D = Ground
 
Last edited:

dvdkea

New member
9
0
1
Location
Albany, NY
yes, i cut off the 12 pin plug leaving the thick cable. i stripped the outer casing off to expose the red and black wires. are color coded and i followed the information below.

UPDATED INFO:


If you have a military pigtail coming off your trailer, here are the color codes that correspond to the wire circut numbers. The wire colors are the indiviual wires that are INSIDE the outer black rubber insulation.

24-484
22-461 LEFT TURN/BRAKE RED WITH WHITE TRACER
24-483
21 MARKER LIGHTS. RED
23
90 GROUND BLACK WITH RED TRACER
22-460 RIGHT TURN/BRAKE BLACK
37
 

dvdkea

New member
9
0
1
Location
Albany, NY
ok, i will check that in the morning. I'm asuming you are talking about under the trailer where the junction box is? i was looking at that this afternoon and it looked correct but, i will checj again.
 
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