2013 Lexus ES 300h Trailer Wiring Harness Recommendation

Question

Question:

Lexus ES300h Prior owner said he towed small utility trailer but there is no wiring to go to trailer. Behind taillight access door there are two small tens that look to have been added. One looks like a fuse and the other is a female plug, rectangular in shape with two rows of 4 rectangular ports each with the lower row having slightly smaller sockets. Could this be a trailer connector?

asked by: Douglas B

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Expert Reply:

I have a wiring kit solution for your 2013 Lexus ES 300h but the 8 port plug you found doesn't sound like any kind of trailer wiring harness I've ever heard of. It's possible that they used a unique setup, but wiring harnesses are pretty standard so the only real way to know is to test each of those ports with a circuit tester to see if they carry any kind of lighting function on them.

For a standard wiring harness kit I recommend going with the Curt T-Connector Vehicle Wiring Harness # C63FR which tees in behind your tail lights and then powers the trailer lights via the wire that runs from the module box up to your vehicle battery. This helps to protect your OEM wiring from overdraw when connected to your trailer.

expert reply by: Jon G

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Answer 1

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 2

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 3

Lance does have a proprietary plug, but many customers see a standard 6-way or 7-way round and notice it doesn't fit their factory 7-way as well. I've attached an article to help if you have one of the 7-way or 6-way round connectors which we…

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Answer 4

Yes, we do. To add a hitch to your 2024 Toyota Grand Highlander, I recommend the Curt Trailer Hitch item #C26VV. This hitch is custom fit and bolts to your Toyota with included hardware. This is a class III hitch with a 2" receiver. It has a…

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Answer 5

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 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

To add a hitch to your 2024 Toyota RAV4, I recommend the etrailer item #e23ZR. This hitch is custom fit and bolts to your Toyota with included hardware. This is a class III hitch with a 2" receiver. It has a 4,000 lbs towing capacity, and a 600…

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Answer 8

As far as wiring for the 2024 Toyota Grand Highlander, we do have the Curt #C59236 available which is more of a universal hardwire harness. Unfortunately there are not any plug-and-play options that have been confirmed to fit as of yet (October 4,…

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Answer 9

Yep, so long as your 2024 Subaru Crosstrek Wilderness is not a hybrid both the Curt and etrailer hitches will fit: - Curt Trailer Hitch Receiver #C13382 - etrailer Trailer Hitch Receiver #e98912 The only difference besides price is the finish; the…

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Answer 10

To add a class III hitch to your 2024 Honda CR-V hybrid, I recommend the Curt Trailer Hitch item #C13397. This hitch is custom fit and bolts to your CR-V with included hardware. It is a class III hitch with a 2" receiver. I really like this…

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Answer 11

Class I and Class II hitches both have a 1-1/4 inch receiver opening. The difference is that a Class I hitch has a lower tongue weight rating, usually 200 pounds and a lower towing rating, usually 2,000 pounds. A Class II hitch usually has a tongue…

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Answer 12

You will have to go with a sliding hitch to allow the trailer to make tight turns. For a trailer 8 feet wide the only bed length that's going to allow 90 degree turns without a slider is a stationary hitch. That being said you have two options.…

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