Why Does 4-Pole Wiring Harness Need Direct Battery Power Connection

Question

Question:

Is there any reason not to or precautions in getting power from accessory plug above the jack storage instead of running to the battery?

asked by: Steven W

0

Expert Reply:

You do need to make a direct wired battery connection for a powered wiring harness like # 118498 because the small accessory 12V convenience outlets provided in vehicle do not have a high enough current rating to power the harness and all of the trailer lights. These handy outlets are great for things like charging a cell phone but they can't deliver the current needed to power trailer lights.

The other concern is that were the plug-in connection to that outlet to come loose you would lose all the trailer lights and you might not even know it for a long time. This is a good question, however, and it does come up fairly often.

You only need to route that one power wire and you can refer to the linked article for tips on doing so.

expert reply by: Adam R

0

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Answer 1

The benefit to a non-powered trailer wiring harness is that it's a bit easier to install since you don't have to run a wire up to the battery of the vehicle. The advantage to a powered kit is that it does a better job protecting the…

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Answer 2

The trailer wiring harness I recommend for your 2015 Toyota Sienna SE AWD is the Tow Ready T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector #118498. This wiring harness installs in line with your vehicle's factory wiring behind…

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Answer 3

All of the available trailer wiring harness available for a 2011 Toyota Sienna, including the CURT wiring, #C56106, install by connecting in line with the tail light wiring connectors located behind each of the vehicle tail lights. A power wire will…

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Answer 4

On your 2011 Sienna, you will first need a 4-way connector like part #118498. You will then need part #ETBC7 to convert the 4-way to a 4-way and 7-way trailer connector to tow your pop-up with brakes. To use the brake controller like part #90195 in…

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Answer 5

Each of the trailer wiring harnesses that fit your 2011 Toyota Sienna are designed to store in your trunk/rear storage area when not in use - the Hopkins Vehicle Wiring Harness #HM11143495 and T-One Vehicle Wiring Harness #118498. You may be able to…

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Answer 6

To connect your vehicle that has a 4-Way flat connector to your trailer that has a 7-Way connector, you will need to install a 7-Way on the rear of your vehicle. If you just want or need the tail light functions to operate on your trailer you will…

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Answer 7

I currently show 2 wiring harnesses for a 2011 Toyota Sienna. First, from CURT, we have the Circuit Protected T-Connector Vehicle Wiring Harness, #C56106. I have included a link to the installation instructions for you. The other is the Tow Ready…

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Answer 8

When we test fit hitches, we take note of above ground height of the inside top of the receiver tube. When the size of the receiver (2 inch or 1-1/4 inch) and the thickness of the lip around the receiver (1/4 inch) is deducted, you get a good…

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Answer 9

It definitely sounds like you have the brake output wire on your trailer not matched up with the wiring of your tow vehicle. Basically you will first need to determine which of the wires on your trailer wiring is for the brake output circuit. You can…

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Answer 10

The clicking sound you are hearing is likely from the 20 amp circuit breaker resetting after being tripped. This would indicate that something is shorting out and pulling too much amperage causing the breaker to trip. Check for any corrosion on the…

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Answer 11

Circuit breakers like what come with the #ETBC7 will automatically reset after they have been tripped. There is no way to manually reset them.

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Answer 12

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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Why Does 4-Pole Wiring Harness Need Direct Battery Power Connection

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