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  • Third brake light GM Advance Trailer plug-in T Harness for Truck cap- 215272

    • $ 139.99


    2019-C GM trucks with the advance trailering system

    Save time and hassle with the plug in "T" Interface Harness. Installation takes as little as 9 minutes and gives you the ability to maintain your connector functionality and OE vehicle wiring. The T-Harness connects quickly and easily, with no need for cutting or splicing of wires.

    Frequently Asked Questions

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    Q: Does the 300200 Leer Wiring harness provide full-time hot wire power to the dome light on a topper?

    A: Yes.
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    Q: What is the difference between the 300200 & 300100?

    A: 300200 is for the newer Fords and Toyotas that require external power source due to the smart towing system.It includes extra wire to run to the battery which is why there is more cost to it. The 300100 fits pretty much everything else
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    Q: It is for a truck cap with LED center stop light?

    A: Yes.
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    Q: Does this install in behind the bumper so that it's concealed and the external bumper mounted plug still operates? Or does this connect to the external bumper plug itself and T from there?

    A: Yes, they both install behind the bumper so that you can still use the external plug for your trailer and not affect usability
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    Q: Will the 7 way harness Leer part 300200 work with a ford F150 lightning

    A: Yes, it does if it is newer than 2015
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    Q: I understand how the seven way connects into the wiring behind the bumper, but my brake light on the camper has only two wires. How will those connect to the four way plug?

    A: There are 2 different style connectors in the package a 6 pin for the Leer fuse box and a 4 pin for the rest of the brands. You will insert the wires into whichever connector you need to match your top 
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    3rd 7-way brake light cf-type-wiring-harness cf-vendor-leer harness leer third