Third Brake Light Wire Location for a 2015 Chevrolet Silverado 1500

Question

Question:

2015 chevy crew cab trying to find blue wire you speak of, peeled bake a foot of harness and didnt find extra blue wire. Did I just not go far enough?

asked by: Bernie

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Expert Reply:

Sometimes there is a blue wire in the loom of the 7-Way but if you are not seeing one that likely means that there is an orange wire under the dash on the driver's side of your 2015 Chevrolet Silverado 1500 that you need to use. This should be the CHMSL wire and carries the stop light signal that you would need for a 3rd brake light.

I would try locating this wire and testing it with a circuit tester like part # PTW2979 before routing wire for your application.

expert reply by: Jon G

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Answer 1

If you follow wiring harness feeding the 7-way trailer connector from the bumper up toward the spare tire and peel back the wire loom, you should be able to find an additional blue wire in the harness. The blue wire carries the 3rd brake lamp signal…

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Answer 2

The easiest way to use your vehicle's 7-way trailer connector to power up the third brake light on your truck cap is to first locate the right and left turn signal wires behind your 7-way. Then simply tap into those and install the Pacer…

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Answer 3

I'm pretty sure that's to wire up a third brake light on a camper shell. To know for sure, take a circuit tester, like our part #PTW2993, and test that wire while applying the truck's brakes. If I'm correct it's a dedicated brake…

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Answer 4

To power the third brake light of the camper shell on your 2015 Chevy Silverado you are going to need to tap into the CHMSL (center high mount signal lamp) circuit of the truck. If you check the diagrams of the fuse boxes of the truck you should be…

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Answer 5

Since your trailer uses a combined wiring system where the stop and turn signals run on the same circuit, in order to add a third brake light to your trailer you would need to use a 2-Wire to 3-Wire Converter, like part #118158. This will convert the…

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Answer 6

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 7

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 8

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 9

Both the Roadmaster and Blue Ox tow bars are great options. But if it was my decision to make I would go with the Blue Ox Avail part #BX7420 as we have found that the Blue Ox tow bars are a little easier to connect and disconnect from. Also this tow…

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Answer 10

Hey Jonathon thank you so much for all of that additional information! To haul your bikes behind your class C Sprinter motorhome, while flat towing your Mini, I recommend the Hollywood Racks RV Rider Bike Rack item #HLY64FR and the Roadmaster Dual…

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Answer 11

Hey Andrew! Yes, Furrion does have a Chill Cube model with a heat pump. This was actually just released for aftermarket sale. You will need a complete system to make the switch, new R32 units aren't backwards compatible with old R410A systems.…

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Answer 12

Hi Paul, you’re definitely on the right track here, and I can help you narrow this down with confidence. With your tandem 3,500 lb Dexter axles and 33 inch spacing, both the Dexter EZ Flex part #K71-652-00 and the Lippert Road Armor part #LC53CK are…

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Third Brake Light Wire Location for a 2015 Chevrolet Silverado 1500

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