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Trailer Wiring Kits for 2009 Volkswagen Touareg TDI


I have a 2009 VW touareg TDI that I would like to put a trailer wiring harness on. It has a factory installed plug that it looks like I can just buy something to plug into this and bolt it to the 4 bolt holes in the bumper. It is a 7 way plug. When I looked at what you offered it looks like product # 30955 would work on this. The set up looks like it is exactly what I need. Can you tell me if this part will work, and if not, what part do you have that will? Thank you very much.


Expert Reply:

The Curt 7-Way Wiring Adapter # C57003 is a special type of adapter that is used when certain import vehicles like VWs tow a trailer that has LED type lighting. LED lights use very little power so they can sometimes have compatibility issue with vehicle wiring that is expecting to see the much higher power draw from standard incandescent-type bulbs. This adapter does plug into a 7-way and in turn provides a new 7-way socket for a trailer's plug. This connector format carries lighting, trailer brake and 12V power signals.

The other part you referenced, # 30955, is also a 7-way socket combined with a 4-pole (two in one housing) that connects to any vehicle using a standard round U.S. Car connector. This item does NOT provide the LED lighting adapter function; it is simply a standard 7-way/4-Pole that can be used in multiple applications. You probably do not have this U.S. Car connector on your vehicle.

The other aftermarket wiring kit offered is a 4-pole harness # 118509 which is intended to operate completely independently of any tow-package wiring components; it plugs in at the cars tail lights and provides a flat 4-pole connector that delivers only lighting signals to a trailer (no trailer brake signal and no 12V power). Installation is shown in the linked video.

Please let me know what type connector you have - you can include a photo too if you like - and we can get you the correct item.

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