Tekonsha 118747 Trailer Wiring Harness Fit on 2020 Mercedes-Benz GLC 300

Updated 06/25/2021 | Published 06/24/2021

Question:

Hi I am interested in purchasing the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector Item # 118747. Your description highlights that this harness will work as long as my car does not have a Premium Package.inch Im not sure what is considered a premium package. Other competitor website further identify the premium package as a P3 Premium Package. Looking at my original sales invoice for my car, I see that I have a DP1 Premium Package which only includes the following: KEYLESS-GO + Sirius XM Radio + 64-color Ambient Lighting + Illuminated Door Sills. My guess is that I do NOT have a premium package that would restrict me from installing the # 118747 in my car. How else can I confirm if I can use the # 118747??? Please advise. Mercedes 2020 GLC 300

asked by: Jeff W

Expert Reply:

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 could provide your VIN to your Mercedes dealer who can look up your vehicle and see exactly how it was configured.

I've looked extensively online, and can't find what I'd consider to be any definitive information that explains the difference between the PO3 and he DP1 premium package, so the dealer would be your best resource.

expert reply by: Mike L