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2020 reverse wire?

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Old

Jul 22, 2020 | 08:46 PM

#1

2017-350

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Tuned

Joined: Aug 2017

Posts: 345

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From: Galveston, Texas

2020 reverse wire?

Does anyone know the color of the reverse wire on a 2020 with BLIS? I want to tap in some auxiliary lights but didn’t think there would be so many wires in the harness. I don’t really want to poke everyone with a tester so I thought I would try here first. Thanks.

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Old

Jul 23, 2020 | 06:16 AM

#2

1olddogtwo

Cargo Master

Joined: Apr 2018

Posts: 2,413

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Going off the tail light harness may cause the BCM to cut power to the circuit. Best bet is use the tow circuit. Center wire on the 7pin.

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Old

Jul 23, 2020 | 07:29 AM

#3

2017-350

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Tuned

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From: Galveston, Texas

I had it to my reverse wire on my 2019, but it didn’t have BLIS so it was easier to find...but it never tripped the BCM. On the center wore of the tow harness, doesn’t a trailer have to be hooked up for that to work completely?

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Old

Jul 23, 2020 | 07:41 AM

#4

Rich53

Senior User

Joined: Mar 2014

Posts: 443

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No, the only lead that requires the trailer to be hooked up is the 12 volt charging lead, as far as I know the taillight circuits are always live.

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Old

Jul 23, 2020 | 07:59 AM

#5

2017-350

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Tuned

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From: Galveston, Texas

So is the center pin always hot or is the center pin the reverse light?

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Old

Jul 23, 2020 | 08:19 AM

#6

Lin19687

Lead Driver

Joined: Jul 2011

Posts: 6,287

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From: Burlington, ma

So could you just plug/play extra brake lights to that harness like as if it was trailer brakes ?
Is this where they plug in for e tra brake lights that zre added above the rear window ?

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Old

Jul 23, 2020 | 09:10 AM

#7

2017-350

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Tuned

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From: Galveston, Texas

I ended up doing a little more searching and found that it was the green with brown trace wire....it’s the same on earlier model trucks. I got lucky.

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