Wiring Harness for a 2016 Mercedes-Benz GLC-300 w/ the Premium Package-1  

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.

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…

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…

For your 2021 Mercedes Benz GLC300 the trailer wiring kit you'd want is the part #118747 which is custom fit for an easy install and has a very reliable converter box.

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…

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…

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…

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…

For your 2021 Mercedes Benz GLC the correct trailer wiring harness is the part #118747 which plugs into the vehicle taillights for an easy install without splicing wires.

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…

The Curt #C13290 is confirmed to fit your 2017 GLC 300. I attached a picture that shows what this hitch looks like installed on a similar GLC as yours for you to check out as well.

The Draw-Tite Max-Frame Trailer Hitch Receiver - Custom Fit - Class III - 2" #75282 requires all hardware be torqued to 68 foot pounds according to the instructions. I've attached a photo in case you need anything else for this installation…