What Is The Purple Wire Used For On The Brake Controller 7 & 4 Way Installation Kit # ETBC7

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Question:

What is the purple wire used for on item ETBC7 and where is it connected to? Most of the videos show that it is not connected to anything. Thank you.

asked by: Oth S

0

Expert Reply:

The purple wire on the adapter included with the Brake Controller 7 & 4 Way Installation Kit, # ETBC7, is an auxiliary wire and can be used as a 12 volt power source, to power a reverse light or reverse lockout function for trailer brakes if needed. This wire can be tied up if it is not used, which is why you often see it left unused in our installation videos.

You can see some helpful wiring diagrams at the link provided, as well as a video showing the purple wire on the 4-Way to 7 and 4-Way adapter from the # ETBC7 kit being installed on a Ford truck to power trailer back up lights.

expert reply by: Jeff D

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Answer 1

On the Deka Wire #DW04914-1 that you referenced there isn't a purple wire, instead you would want to use the black wire as the reverse light circuit. Green for right turn/stop Yellow for left turn/stop White for ground Brown for running…

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Answer 2

On the 7-way wiring plug and lead part #H20046 there isn't a purple wire. Normally a purple wire for a 7-way is for a reverse light circuit. Which would correspond to the yellow wire of this adapter.

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Answer 3

The Chevy Vans are not actually pre-wired for a brake controller. A brake controller has to be partially hardwired in. If your 2007 Chevy Express came with a factory installed 7-Way trailer connector then the blue brake output wire should be ran…

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Answer 4

Grease seals such as those included with the #DBRKHW35EZ bearing kit should be be installed so that they are flush with the hub bore. If the correct seal is used, everything should fit together perfectly. As long as the castle nut is correctly ran…

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Answer 5

Since heat rises I would at the very least put a set of the Trailer Vents #HMAV2-AVT2 near the top of the trailer to get the hottest air of the trailer out. What you could do for maximum air flow in your trailer is have a set facing forward in the…

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Answer 6

The purple wire on the Hopkins 4 Pole to 7 Pole Adapter, #37185, is typically used for 12V power or reverse lights. You will want to determine the function of the center pin on your trailer's connector. If the center pin is used for reverse…

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Answer 7

I think you are going in the right direction. I would definitely replace the 14 gauge wire going to the trailer brake magnets with 10 gauge wire or larger. Usually larger than 10 gauge is hard to get into the trailer connector though. I would also…

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Answer 8

To connect back up lights you need to have a 7-way trailer connector on both your trailer and tow vehicle. On a 7-way the reverse lights are powered by the center pin. To connect reverse lights to the trailer's 7-way you can use 16 gauge wire…

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Answer 9

Trailer wiring generally uses 16 gauge wire, part #16-1-1. However, with a long trailer like yours you may want to go with a larger like 14 gauge #DW07550-1 or even 12 gauge #12-1-1. Each size is sold by the foot. You will need to have the lights at…

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Answer 10

I spoke with my contact at Dexter regarding the Nev-R-Lube Bearing #31-71-3 that you will be replacing. He stated that you will just need a 1-1/2 inch socket for the 1.42-1.44 inch nut. This is the same size socket needed for a standard spindle nut.

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Answer 11

It sounds like you're asking about the 12V circuit on the 7-way trailer connector on the rear of your 2003 Chevrolet Trailblazer. Some vehicles will always have power and some others will not. We don't have this specific information for your…

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Answer 12

It's basically just a brand difference. Dexter trailer brakes are often considered to be the best around so we recommend them highly, but for a great self-adjusting assembly at a lower price you really can't go wrong with the etrailer.com…

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What Is The Purple Wire Used For On The Brake Controller 7 & 4 Way Installation Kit # ETBC7

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