How to Install a 7-Way Trailer Connector on a 2017 Ford F-150

Question

Question:

Im looking into purchasing a 2017 F150 that does not have a tow package or trailer plug. What would I need to order to add a 7 prong harness? Are they prewired like Chevy Silverados?

asked by: John

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Expert Reply:

In order to install a 7-way trailer connector on your 2017 Ford F-150, you are first going to need to install a 4-way trailer connector and then a 4 to 7-way trailer connector. For this, I recommend using the Hopkins Plug-In Simple Wiring Harness part # HM11140735 and the Hopkins Adapter 4-Pole to 7-Pole and 4-Pole part # 37185. The 4-way harness will be a direct plug and play option whereas the 7-way will require you to make two wiring connections. The two connections needed for the 7-way will be a blue and orange or red wire which are located on the driver's side frame rail.

If you are looking to tow a trailer with brakes which is why I assume you are needing a 7-way trailer connector then you will also need a brake controller. For this, I recommend the Tekonsha Prodigy P3 Trailer Brake Controller part # 90195 with the Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers part # 22292. The P3 is one of our best selling brake controllers largely due to its integrated safeguards that will protect both the vehicle and wiring in the event of a short.

I have attached a video that shows where the brake controller plug is located on your F-150 for you.

expert reply by: Conner L

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Answer 1

It sounds like you are connecting wires to an aftermarket 7-way on your 2017 F-150. There are two wires run from under the hood to the end of the driver's side frame rail. One is a blue wire which is the electric trailer brake output wire…

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Answer 2

Luckily for you, your 2008 Ford F-150 already has most of the items you need for a 7-way (circuit breakers, etc). Therefore, the only thing you need to install a 7-way is the Adapter 4-Pole to 7-Pole and 4-Pole part #37185. This adapters plugs into…

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Answer 3

The Hopkins Agility Trailer Brake Controller #HM47294 will install in your 2017 Ford F-150 by using the Plug-In Adapter #HM47845. The adapter will plug into the connector which is installed behind a side panel between your steering wheel and your…

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Answer 4

Since you are not getting the 12V power when your truck is running, you most likely don't have a fuse issue as you stated their isn't a specified fuse or relay in the owners manual. The issue is that your truck is computerized even at the…

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Answer 5

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 6

For your 2017 Ford F-150 we have the 7-way kit part #C56413 as a confirmed fit. This plugs into the trailer wiring connector that is present at the truck frame rail and gives you a functional 7-way. I attached an install video for this for you to…

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Answer 7

The reverse light pin on a traditional 7-way trailer connector, like part #PK11893 or a factory connector if that's what you have on your 2018 Ram, is the center pin. Take a look at the picture I attached that shows all the pin functions. To add…

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Answer 8

If you are just needing a 7-Way to activate the lights on your trailer then you will simply need to use the Hopkins #37185 that you referenced along with a No-Drill Mount Bracket #18140 as depicted at the start of the attached installation video on a…

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Answer 9

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 10

I took a look in the online version of the owner's manual for a 2016 Ford F-150 and there is a fuse for the trailer brake control module in position 49 in the fuse block in the engine compartment, which is a 30 amp fuse that I recommend taking a…

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Answer 11

For charging a trailer battery you want to go with as thick of wire as you can. 10 gauge would be ideal. We sell 10 gauge wire by the foot with part #10-1-1. Typically a 40 amp breaker like part #9510 is used.

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Answer 12

Under the hood of your 2005 Chevy Silverado there will be a 12 volt accessory circuit fuse that blew. I attached a picture for you to check out that shows exactly where the fuse will be.

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