Why is There 12 Volts on the Black Wire for my Trailer Connector

Question

Question:

There is 12 v coming from the truck connector and also 12 v coming from the camper connector. Should there be 12 v on booth sides and should I connect them together. I guess that would make 24 v?

asked by: William

0

Expert Reply:

If you are referring to the 12 volt pin that is located in the 1 o'clock position on the 7-way trailer connector then there should be 12 volt power feeding from the vehicle to the trailer on that pin. This means that if you test the 12 volt wire (usually black) before it enters and exits the controller, there should be 12 volts on either side assuming the 12 volt wire on the trailer is ran to a battery for maintenance changing purposes. Attaching two 12 volt power wires together will not give you 24 volts.

I have attached our wiring help article for you as well.

expert reply by: Conner L

0

Answer 1

The 5 on 5 or 5 on 4-1/2 you're seeing on wheels is the bolt pattern. The first number is the amount of bolt holes and the second number indicates the spacing. When you have an even number of holes you can just measure from the center of one bolt…

view full answer...

Answer 2

Since you said you have a 7-way blade connector on your Silverado I would start with the 7-Way Molded Trailer Wire Connector, part #H20046. This is an 8 ft long harness with the 7-way trailer connector. If you need a shorter harness, you can check…

view full answer...

Answer 3

The black wire of the Hopkins 7-Way Molded Trailer Wire Connector #HM20048 carries the 12 volt accessory circuit. This is the circuit that will typically power interior lights or charge a trailer's battery. I attached a help article that covers…

view full answer...

Answer 4

It's a wire color difference but not a function difference on the pins of the 7-way. The difference comes from the fact that the two different styles are representative of two different areas that uses trailers. Traditional is usually seen on…

view full answer...

Answer 5

Traditionally, trailer manufacturers did not use electric brakes on boat trailers because the brake magnet wiring and trailer wiring did not always have the best insulation or water protection. These days, more and more manufacturers are using…

view full answer...

Answer 6

The Buyers Products Trailer Wiring Junction Box #3375601101 referenced in your question measures 6.5 inches long, 3.21 inches wide, and 2.5 inches tall when the cover is installed. The mounting holes at each end are spaced apart 7.38 inches on…

view full answer...

Answer 7

The Curt Replacement OEM USCAR Trailer Connector #C42JR will work if you still have the US CAR Connector on your 1999 Dodge Ram Pickup. If you're needing to connect this to a square style connector then the only option we have is the tee-in…

view full answer...

Answer 8

Those are the wires for the brake magnets. You will need to connect the black wire to the brake controller output wire on your trailer connector and you are correct the white wire will need to be grounded to a clean metal surface on the trailer. I…

view full answer...

Answer 9

The size of the nuts that fit the posts of the Trailer Wiring Junction Box #3375601101 is M5-.8 pitch. This does not come with extra nuts.

view full answer...

Answer 10

On this page (typically below the product links) there is a helpful link section that will have the install instructions fo the Hopkins Breakaway kit part #20400 that you referenced. I also attached an install video that shows the kit installed as…

view full answer...

Answer 11

The factory plug is located above the spare tire on your 2006 Chevy Silverado. I have included a picture of what it looks like and where it is located. You will probably have to lower the spare for easy access to the plug. The tow package wires will…

view full answer...

Why is There 12 Volts on the Black Wire for my Trailer Connector

Product Page this Question was Asked From

Featured Help Information

Miscellaneous Media

Continue Researching