Can Trailer Wiring be Used to Power Camper Shell Dome Light/3rd Brake Light

Question

Question:

I just bought a Leer topper and installed it on my pickup. I want to use the 7 way that’s installed in the bed of my truck to provide constant 12v to the dome light and also power the 3rd brake light. How can this be accomplished and how exactly would this be wired?

asked by: Reese M

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Expert Reply:

The 1:00 pin circuit of the 7-way could be ran to power the dome light since that's a 12 volt circuit that is hot all the time but you would need to go a different route for the third brake light. For that you would need the tail light converter part # PP20-702 which you'd wire to the stop/turn circuits of the 7-way which would then give you a stoplight circuit on the red wire like you need.

expert reply by: Jameson C

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Answer 1

You can use 7-way trailer wiring with the module part #PP20-702 to provide power to the third brake light of your camper shell/cap. Basically the stop/turn circuits of the trailer wiring need to run to the yellow wires of this module and then the…

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Answer 2

The part #PP20-702 has to connect to both the left and right hand turn signal/stoplight circuits in order to separate out the stoplight. The reason that is because it waits to see voltage on both circuits at same time to then allow the stoplight…

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Answer 3

10 feet is the longest 5th wheel style of 7-way harness that we offer. If you can find a more direct route to get it up to the front of your truck bed that would be ideal. Otherwise we do have 7-way extensions you could use on the camper like…

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Answer 4

Yes, you can use the factory trailer connector on your 2015 Nissan Titan to power the third brake light on your Leer camper shell. That said, they don't make a plug and play harness for this so you will need to do some wiring but no splicing into…

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Answer 5

I've attached the instructions for the Pacer Performance 3rd Brake Light Logic Module #PP20-702 but you'll need to connect the yellow wires to both the left and right turn signals, regardless of where you attach the logic module. Since this…

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Answer 6

To fix this issue, you're just going to need to install the: -3rd Brake Light Logic Module #PP20-702. This will separate the third brake light and your turn signal lights to alleviate the flashing. Attached is a product overview video for you to…

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Answer 7

The Pacer Performance 3rd Brake Light Logic Module #PP20-702 filters out the turn signal and only illuminates the 3rd brake light when the brake pedal is pressed. I have attached a photo of the installation instructions for you to check out.

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Answer 8

The clip that you are referring to that holds the 7-way plug to the socket is typically found on the connector which is why the #HM40940 does not come with it. I wish we sold that piece by itself but only way to get it is to go with a new harness…

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Answer 9

In order to wire this up the way you want, and also be able to disconnect it easily, I suggest using the Hopkins 4-Pole Flat Wiring Extension - 120" Long #HM48235 and the 3rd Brake Light Logic Module #PP20-702. I would start by cutting the…

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Answer 10

The pictures you are referring to are actually for older Silverado and Sierra pickups. I am not aware of any special wiring near the rear of your 2018 GMC Sierra 2500 but you can easily isolate the brake signal by using the 3rd Brake Light Logic…

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Answer 11

Lance does have a proprietary plug, but many customers see a standard 6-way or 7-way round and notice it doesn't fit their factory 7-way as well. I've attached an article to help if you have one of the 7-way or 6-way round connectors which we…

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Answer 12

We have run into this quite a few times in the past, and the best option will be replacing the Lance 7-pin connector with a standard 7-way blade connector like the #PK12706. This will give you a standard 7-way connector to plug into the factory 7-way…

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