Does the Vehicle Battery have to be Disconnected to Install Trailer Wiring Harness # C55369

Question

Question:

Disconnect car batter on car before I install wiring

asked by: Chris X

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Expert Reply:

If you look at the installation instructions, I have linked for trailer wiring harness # C55369, disconnecting the vehicle battery is not required. I have also included a link to a video showing a typical installation for you.

expert reply by: Michael H

0

Answer 1

The Pollak circuit tester #PK12741 will tell you which functions are working in a 7-Way trailer connector but it doesn't tell you the location of the functions within the connector. But I can tell you that. If you are looking at the face of a…

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Answer 2

A wiring adapter such as the Mighty Cord 4-pole to 7-way #A10-7084VP will let you change the trailer connector format from one to the other but by itself it does not add the functionality of a trailer brake controller. To have trailer brake power you…

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Answer 3

I understand the frustration, manufacturers are making hitches more hidden and sleek. It's nice having the cross bar hidden, but it does make it challenging to mount wiring because that's the traditional spot. You can route the 4 pole wire…

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Answer 4

Correct, a 4 to 7-way adapter will allow your friend to tow the trailer. The lights will function therefore making it legal to drive but the brakes would not be able to be engaged without a brake controller. The best and most cost effective solution…

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Answer 5

If you don't care about brakes all you need is the Mighty Cord Trailer Connector Adapter item #A10-7084VP. You would plug your Honda's 4-way into the adaptor's 4-way and then plug it into the 7-way of your trailer. The lights will…

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Answer 6

The Hayes air actuated electric brake controller part #HA100400C that you referenced is a component you will need as this can convert the air brake intensity of your tow vehicle to electric current for your trailer's brakes. You will need a 7-way…

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Answer 7

To install a brake controller on your 2016 Ford Explorer, if you have the factory 4-flat you will need to hardwire the rest in. I am not certain which brake controller you have specifically but the black wire is generally the power wire and run to…

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Answer 8

For the Mighty Cord Trailer Connector Adapter #A10-7084VP and your Curt #C13182 trailer hitch, I recommend the 6 and 7-Way Trailer Connector Mounting Box for Round or Square Tube Hitches #18159 along with some simple zip ties like #853-3194-02. This…

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Answer 9

There is a difference between a 7-way round and and 7-way rv blade connector. If you take a look at the accompanying photo, which is from our linked article on trailer wiring you can see that the connector on the left has blade-style pins while the…

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Answer 10

The Dual Battery Isolator Switch #3376391050 that you referenced would work well for you as it can turn off two batteries easily by rotating the switch and is rated for up to 1,000 amps surge.

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Answer 11

You asked a lot of great questions so I'll answer them in the order they were asked. For a brake controller, I recommend the Tekonsha Prodigy P3 Trailer Brake Controller #90195 to install on your 2018 Toyota Highlander. This proportional brake…

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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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Does the Vehicle Battery have to be Disconnected to Install Trailer Wiring Harness # C55369

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