No Trailer Running Lights On a 2019 Honda Ridgeline with T-One Vehicle Wiring Harness 118778

Question

Question:

Installed as per the instructions, im getting no tail lamp power on the brown wire of the trailer connector. Ive checked the vehicle connector under the bumper as well, no power. Signals and brake light leads are powered just fine.

asked by: James W

0

Expert Reply:

I called Tekonsha and they said they have had one other customer with this issue while using the T-One Vehicle Wiring Harness part # 118778 on a 2019 Honda Ridgeline. The cause of this issue was a bad converter box so that may be what is causing your running lights not to work as well. I also took a look through the instructions and compared them to the Curt T-Connector Vehicle Wiring Harness part # C56365. It looks like each manufacturer recommends installing fuses in different places so just to be sure, make sure you have a fuse in each of the following:

Position 3 - 10 Amp
Position 6 - 7.5 Amp
Position 7 - 7.5 Amp
Position 9 - 20 Amp

expert reply by: Conner L

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Answer 1

Thank you for the photo, it was helpful. From that it simply looks like you need to remove the locking tab of the tow plug on your 2018 Honda Ridgeline. The fastener at the top needs to be removed (what the arrow is pointing at) by sliding it…

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Answer 2

The connector pictured is not the correct one for the black module of the Tekonsha T-One Wiring Harness #118778 to install into. The correct one will be located behind the access door in the driver side of the rear cargo area in your 2019 Honda…

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Answer 3

In order to remove the cap to install the #118778 you need to remove the dark blue fastener from the housing by sliding it rearward. Unfortunately I do not have a picture of the locking tabs but they are on the side of the connector. Pressing down…

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Answer 4

If you aren't getting running/tail lights on the T-One #118778 installed on your 2019 Honda Ridgeline then I recommend checking the following: First, make sure that you turn the headlights on for your Ridgeline prior to testing (this has…

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Answer 5

Curt went a slightly different route when they designed their trailer wiring kit for your 2019 Honda Ridgeline than Tekonsha did when they created the #118778. The fuse is there to protect the converter box in case of a short on the trailer wiring,…

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Answer 6

I attached a picture that shows what both connectors on your 2019 Honda Ridgeline look like for installing the Tekonsha wiring kit part #118778 that you referenced. The picture with the letter A on it is the 12 pin connector located near the back…

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Answer 7

In regards to the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector part #118778 which is a fit for a 2020 Honda Ridgeline, there will be two connections one inside the vehicle and one outside. These locations will both be listed in…

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Answer 8

It's very easy to install a trailer brake controller on a 2021 Honda Ridgeline. I recommend the Tekonsha Prodigy P3 Trailer Brake Controller part #90195 which comes with a harness that you could simply attach to the one that came with the…

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Answer 9

This can be a bit tricky but it sounds like you might be looking in the wrong spot on your 2019 Honda Ridgeline to install the T-One Vehicle Wiring Harness #118778. The directions don't do a great job of making this more transparent but the…

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Answer 10

The correct Curt T-Connector Vehicle Wiring Harness for a 2019 Honda Ridgeline is part #C56365 which also fits a Honda Pilot as well. The Honda Ridgeline and Pilots both use the same trailer wiring harness since the wiring for these circuits are…

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Answer 11

While we don't have a video I can hopefully explain how to remove the cap of the wiring on your 2017 Honda Ridgeline to install the trailer wiring #118288. Remove the connector from the cross-member using a pry tool like #ALL648544. Remove…

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Answer 12

I believe you are on the right track for installing the Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector #C56365 on your 2019 Honda Ridgeline. The two green connectors you are referring to are relays; the 12-pin connector…

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