Does it Matter Which Way Wiring Harness is Plugged Into Optronics Marker Light MC-53RB

Question

Question:

Does it matter which way you plug in your male industry standard plug into the light? The plug has a white wire negative, ground and a black wire, positive, hot. The plug seems to connect to the light either way.

asked by: Steve G

1

Helpful Expert Reply:

Some lights are polarity sensitive but Optronics light # MC53RB is not. You should be just fine plugging in the wiring harness, # A46PB, either way.

expert reply by: Michael H

1

Answer 1

The brown wire for your trailer wiring should be for the running lights while the white wire should be for ground. Typically clearance lights use black for power and white for ground, like part #MCL32AB, but in the case of black and red wiring the…

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Answer 2

I can help you sort out your trailer wiring so that you can correctly install your new LED trailer lights. The color of the wire on a trailer often can tell you what function it serves but since this is not always the case it is best to test all of…

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Answer 3

The Bonded 4 Wire - per foot #16-4B-1 you asked from would use the brown running light wire for your clearance/marker lights. The LED light you referenced sound like they have two wires so one will be power and the other ground. You can connect them…

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Answer 4

You have it right so far, the 4-way connector is just as you have stated. Remember that Yellow has a L in it so that is the left side brake/turn signal and green has a R in it so that is the right side brake/turn signal. The colors for wiring a 7-way…

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Answer 5

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

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Answer 6

You should not need any extra fuses. Trucks like the Dodge Ram 2500 are built for towing and should have enough power on those circuits. First I would wire the lights to the trailer and worry about the 6-Way last. I would wire the lights with the…

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Answer 7

If your trailer has 7 wires running all the way back to the brakes, then yes, you can tap into the existing wiring. Each of your new brakes will have two wires for the brake magnet. One wire is for 12 volt power to the brake magnets and the other…

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Answer 8

Normally a tandem axle trailer only has one brake wire going to the vehicle, and it is typically blue. If you have two separate brake wires for your axles, that is fine and will not cause an issue. Having one wire ran along the trailer instead of the…

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Answer 9

7-Way connectors like the #A7WCB that you referenced should be wired by function and not color. Since trailer manufacturers can sometimes use non-standard color wires for the taillight functions of their trailer it is best just to determine the…

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Answer 10

You have a good plan! You are correct that once you have a functional 7-way connector and the Tekonsha Prodigy P3 #90195 installed in your truck that you will not need any other wiring on the truck. Going with a junction box like the #38656 to…

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Answer 11

The blue wire from the Breakaway Kit Battery Charger #20011 will go to the power (likely black) coming from your breakaway switch, such as with the Hopkins Break-Away Switch #HM20010. The other wire from the breakaway switch should be spliced into…

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Answer 12

You should be able to get the nylon bushings out fairly easily. In the worst case scenario, you can use an old 5/8 inch bolt or piece of round bar stock and punch the bushing out. The bronze bushings can be pounded in with a mallet or a hammer. If…

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