Choosing The Correct 4-Way Vehicle Wiring Harness on a 2020 Mercedes Benz GLC 300

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Question:

I cant find the connector for the T connector for the trailer wiring harness.

asked by: Yelinton G

0

Expert Reply:

The T-One Vehicle Wiring Harness # 118747 for your 2020 Mercedes-Benz GLC 300 will only connect if you do not have the P03 premium package. The connectors for this harness are located on the tail light wiring harness located behind the access panels on both the drivers and passenger sides(see instructions linked below).

If these connectors are not present you will need the Vehicle Wiring Harness Kit # C59496. This kit includes a test light that allow you to identify the correct wires to tap into your your GLC.

expert reply by: Bud M

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Answer 1

Thank you for the pictures. You are definitely on the right track here. The Tekonsha #118747 is not intended for the models with the premium package. I will have customer service contact you for a return. I do not recommend cutting the plugs off of…

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Answer 2

The yellow plugs on the Tekonsha T-One Connector #118747 you have for your 2018 Mercedes-Benz GLC get plugged into the factory tail light connectors behind the access panels on both the passenger and driver side of the rear cargo area which is shown…

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Answer 3

The Tekonsha trailer wiring kit part #118747 is a plug and play option that fits your 2019 Mercedes GLC 300 but does require running a wire up to the battery. This is because the taillights of your vehicle can't handle the amperage draw of the…

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Answer 4

In regards to installing a trailer wiring harness on a 2016 Mercedes Benz GLA such as the Curt Upgraded Circuit Protected Powered Tail Light Converter Kit part #C59496 which is what I recommend, you must test the wires to determine function. We are…

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Answer 5

According to our technicians the 4-Pole Flat Trailer Connector item #118747 will not work with any of the Premium Packages on the 2016 GLC-300. You will need to use the 4-Pole Trailer Connector and Installation Kit item #C59496.

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Answer 6

We have universal trailer wiring harnesses that fit your 2020 Mercedes GLC 300 with the Tekonsha part #119147KIT. This ties into the taillight wiring of your vehicle with included quick splice connectors.

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Answer 7

According to Tekonsha, it's the PO3 Premium package that would prevent the #118747 as the connectors on the taillight wiring harness are different. From what you describe, I'd agree, it doesn't seem like you have the PO3 package, but you…

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Answer 8

We can get your 2022 Mercedes GLC300 setup to tow a utility trailer. You will need the Vehicle Wiring Harness Kit w/ 4-Pole Trailer Connector and Installation Kit, part #C59236. Once you add this harness kit you will be able to plug a utility…

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Answer 9

The Tekonsha T-One #118747 wiring kit will fit any 2016 Mercedes-Benz GLC300 that doesn't have the Premium 3 Package. I spoke with my contact at Tekonsha who said that all of the GLC300s come with LED lights so we aren't sure if you have the…

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Answer 10

According to Tekonsha, their #118747 T-Connector trailer wiring harness fits US and Canadian spec 2020 Mercedes-Benz GLC 300 models with the exception of vehicles equipped with the PO3 Premium Package. If you're unsure of how your GLC300 is…

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Answer 11

The best trailer wiring harness option we offer for a 2023 Hyundai Palisade is theCurt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector #C43FV. This offers a completely plug and play installation with no splicing into the vehicle…

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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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Choosing The Correct 4-Way Vehicle Wiring Harness on a 2020 Mercedes Benz GLC 300

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