Does 12V Pin on 7-way Trailer Connector Always Have Power

Question

Question:

Is the + side of my 7 way trailer connector always powered

asked by: Bill P

1

Helpful Expert Reply:

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 vehicle, but to determine if your 12V always has power you can test the pin in the 1 O'clock position on your 7-way.

The other pins will have power when the corresponding light is used or the brake pedal is pressed.

expert reply by: Charles S

1

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James P.

8/5/2020

My F-250 doesn’t have constant 12v to the trailer plugin. How can I get a constant 12 volts?

Reply

Chris R.

8/15/2020

If you want to have constant 12V power to the trailer, even when the truck's ignition is off, you can simply manually run your own hot lead. To do this run a length of 10 gauge wiring # 10-1-1 from the 12V pin on the 7-Way up to the battery's positive post via a circuit breaker like # 9510.

Reply

Answer 1

The only pin that should be continuously showing 12V power on the 7-Way connector on your vehicle is the 12V power circuit which is normally the black wire but not always. In 7-way wiring the 12V auxiliary power feed is carried on the contact at the…

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Answer 2

The light that indicates that the 12 volt circuit is hot is normal and it will not drain the battery. Think of it as the battery having a really long positive terminal that just extends to the rear of the vehicle. If nothing is drawing power from it,…

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Answer 3

The auxiliary 12-volt wire that runs from the 7-way connection to 7-way trailer plug will supply 12-volt power from the vehicle to the trailer. The 12 -volt power will allow interior or exterior lights to run that are not wired in to the…

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Answer 4

The Advent Air RV Air Conditioner w/ Air Distribution Box, #ACM135CH requires an opening of 14-¼” by 14-¼”; this is the unofficial industry standard with a tolerance of +/- about a 1/8”. This is for roofs 2-1/2" to 5" thick. This…

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Answer 5

The first thing you'll need to flat tow your 2015 Chevy Malibu LS is a base plate kit like the Roadmaster part #RM-523178-5 that is a confirmed fit. In addition to the base plates, you will also need a compatible tow bar, safety cables, lighting,…

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Answer 6

Most if not all trailer wiring harnesses/connectors use larger wires for the 12 volt and ground circuits compared to the other circuits (lights). The sockets themselves don't have an amperage rating so you will go by the draw of the things…

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Answer 7

You can put a maintenance charge on your trailer battery with the 12 volt accessory circuit of the 7-way. The 1:00 position of your 7-way carries this circuit. You would just need to run a length of 10 gauge wire like part #10-1-1 (sold by the foot),…

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Answer 8

Hey Ron, The license plate light is typically spliced into the running light circuit so that it has power anytime the headlights are on. Since the Curt Custom Tail Light Wiring Kit for Towed Vehicles #C96JR would be just transferring your…

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Answer 9

You can use a 7-Way and 4-Way connector at the same time just as long as you are not overloading the light circuits. If your camper has a lot of outside lights like running lights, and brake/stop/turn lights then the lights that perform the same…

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Answer 10

The wire connected to your 12V (1 o'clock) position on your 7-way should be connected to a 40 circuit breaker like #9510 and then to your vehicle's positive battery terminal using 10 gauge wire like #10-1-1. The 12V power at your trailer…

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Answer 11

If your battery is already connected to the 12V power circuit then it is already receiving a charge form the battery/alternator on your 2000 Chevy Silverado 1500 (see attached pictures). With that being said, since your trailer battery is far enough…

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Answer 12

It is possible to use a 7-way vehicle end connector such as #PK12-707E to hook up to a stand-alone battery for your lights. You would need to connect by using 10 gauge wire, #10-2-1, and if you use a deep cell battery as you suggested, a pair of ring…

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Does 12V Pin on 7-way Trailer Connector Always Have Power

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