How to Run the Power Wire for Trailer Wiring on a 2020 Toyota Rav 4

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Question:

I have a 2020 Toyota Rav 4 and I am installing trailer wiring, how do I get the power wire ran to the battery?

asked by: Zeke

0

Expert Reply:

How you run the power wire for trailer wiring on your 2020 Rav 4 is a personal choice. The directions do not give you a specific path to take, but it does give some suggestions. The wire will have to start at the back of your Rav 4, near the tail lights and then route to the battery up front in the engine compartment.

I have installed many wiring kits and I prefer to route the wire to the outside of the vehicle, and underneath along the frame. This prevents having to take the interior apart, and running up to the firewall, then finding a hole to get into the engine bay.

Fortunately on your Rav 4, on the driver's side floor of the hatch area, there is a grommet with factory wires running to the outside. You can use this to get the wire outside, then route it underneath towards the front. There's a plastic panel underneath, this will help hide the wire, and keep it protected. Just make sure that you keep the wire as far away from major heat sources like the exhaust, or any moving parts that may damage it.

I always recommend having extra zip ties to help secure everything, you can use part # DW05727-25.

I have attached a video of the Curt T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # C56434. It shows helpful tips of how, and where to connect and route all of your wires. I've also linked an article about running a power wire for trailer wiring.

expert reply by: Robert C

0

Answer 1

If there is already a harness that goes through the firewall and that is easy to get to/work with then you can use that though it may require some persuasion to get the wire through. Otherwise drilling a small hole, running the wire through, and then…

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Answer 2

Normally you can find the brake light switch under the dashboard at the top of the brake pedal. There could be a number of wires attached to the switch so you can use a tester like part #PTW2993 to test the wires. Since the auto manufacturers can use…

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Answer 3

They're working fine on this end, I'll send you a .pdf copy via email but I'll also link to an install video showing the harness being installed on a 2021 RAV4. You'll likely find this more helpful than the printed instructions…

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Answer 4

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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Answer 5

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 6

If you just need a 4-pin to 7-pin trailer wiring adapter, then you can use part #C57672. This will plug into the 4-pin trailer connector on your brother's vehicle and give him the 7-pin socket for the trailer. Keep in mind, this will only give…

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Answer 7

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 8

The OEM prep package consists of 4 "pucks" in the bed of the truck that will allow you to drop in puck style hitches for easy installation and removal, that gives you a completely clear bed when not in use. The B&W Companion OEM 5th…

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Answer 9

Even though I cannot comment specifically on the grease you used because I am not familiar with it, I can tell you the best grease for trailer bearings is a a grease with a rating of GC-LB, which just means it is made to withstand very high…

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Answer 10

If you have a vehicle specific wiring harness for a brake controller then that would indicate that you have a factory tow package and subsequently would already have a 7-way at the back of your vehicle. The universal 7-way connector #ETBC7 is meant…

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Answer 11

Hey Antoine, so the two kits you mentioned are actually really similar and honestly I would go with the part #ETBC7 if I were you. The #ETBC7L is basically the same thing minus a couple wires and breakers so you may as well get the kit that has…

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Answer 12

You do have the option to utilize the air brakes on your 2023 Freightliner Cascadia to control electric trailer brakes using the Hayes Air Actuated Trailer Brake Controller, part #HA100400C. However, we mostly recommend just using an electric brake…

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How to Run the Power Wire for Trailer Wiring on a 2020 Toyota Rav 4

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