Tow harness adapter
 

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2008 Cayenne V6: I've never towed but need to now. I already have a tow hitch installed. I located the connector and took the attached pic. Uhaul personnel could not find an adapter to change from the Cayenne to the Uhaul standard 4-pin (attached pic). I can't find an adapter on the internet. Anyone know where I can find an adapter ? Thanks

Google: 7 pin to 4 pin trailer adapter

I just bought the adapter on Ebay from a Porsche dealer for $15.36 shipped. P/n 95512708b, it's made by Pollak for Porsche, hence the 955 starting part number. Works great and fantastic price.

Bought my adapter at the dealer. Nice piece, but not cheap.

The controller may not work correctly if the trailer uses LED lights. These lights draw much lower current than regular incandescent bulbs. This confuses earlier controllers that a bulb(s) are burned out.