Hello. I have 11 Cayenne TT and I already installed OEM trailer hitch, but I can't find a wiring harness that is inside a vehicle that should be connected to module. Anyone has any idea?
Thank you

 

http://www.suncoastparts.com/product...AYDIESELEXTtow

do you have this?

 

I'm talking about a trailer module that's gets added in inside the vehicle. 1 harness comes from outside of the vehicle and another from inside the vehicle, existing harness, but I cant find it.

 

I think it should be on the left hand side inside, but that may only be on ones that come with the hitch from the factory? On mine, I only needed to unscrew the cover on the outside and plug that module in. Why the tow package doesn't come with it to begin with is another story.

 

I'm doing a fresh install on my vehicle that never came with trailer hitch.
I maybe unclear, I'm missing harness that comes from inside of a vehicle to TRAILER TOWING CONTROL MODULE and not wiring for electric brakes and not exterior Trailer Plug. It's usually on the right side but I can't find it.
Any ideas?

 

Found a red plug that was located on the right side inserted in the red plastic holder, removed Bose amplifier and installed a trailer controlled module with 2 harnesses connected.
Thank you STRONBL.

 

I have a 2014 CTT. I installed a curt trailer hitch which was pretty easy actually. I now want to hook up the factory wiring using this part (WIRE HARNESS - PORSCHE (958-612-506-00)).
I need some help locating the electrical connections. There should be two connectors inside the vehicle on the passenger rear cargo side. I located one a green connector but cannot locate the second one which is the control module.

Please help.

Thanks

 

I too have a Curt hitch and would like to install the OEM wiring but I have had no luck sourcing the correct parts or instructions on how to install them. I contacted Suncoast to enquire whether they could supply just the electrical components from the hitch kit they sell but they will not; the rep claimed they receive the kit direct from Porsche and cannot even order the electrical components separately. My dealer quoted $1200 to install the module and wiring (no thanks) and my local independent mechanic recommended I visit the dealer because they couldn't find the correct part numbers and procedures. I don't know why this particular task is so DIY unfriendly.

That said, I think you need to purchase and install the module in addition to the wiring harness you linked, then have a dealer code in the new module. If you find the correct part numbers and procedures PLEASE post them. Alternatively, you can install one of the sub-$100 solutions from etrailer.com, which are not elegant but do work if you only need a 4-flat or 5-flat connector (which have no provision for electric trailer brakes like the OEM 7-pin round connector).
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After I bought a curt hitch, which is still sitting unused if anyone is interested, I realized that the only way to know for sure you had the correct parts was to buy the original hitch as it not only comes with the long cable that runs the length of the hitch but also the additional module that is not pre installed (in addition to the module installed in the right rear fender well). After many hours of research this was my conclusion and to be honest I am glad it took me awhile because I changed my mind and decided not to install it as I have hitches on two other vehicles now and decided to get a roof box for the Cayenne instead and use another vehicle if I needed to tow. All that being said, knowing you want a hitch, if you are not just using it for a rack or bikes and want to tow, I would not advise the aftermarket route as cheap as it may seem. The reason is you will want that hitch hookup to recognize when a trailer is attached as it talks to the ecu and adjusts several parameters such as gear ratios and provides for proper braking, and a little but important thing is that it does things like disable the backup sensors when it knows a trailer is attached so you don't get the obnoxious beep when backing up.

 

I have a PDF of the porsche install procedures for the oem kit. the instructions cover the install pretty good. If you look around it all makes sense, just need to think it through. I had a little trouble at first, but in hindsight made sense. I can post if still needed.

 

KRICCI, do you have the install procedures you can send me?

Thank you!

 

I'll look when I get home next week. If so, I'll pm you.

 

please can you send me this pdf too? thanks

 

I would be most appreciative as well.

 

I found it - now to get it to post.

Let's see if this works:
http://rennlist.com/forums/attachmen...ch-install.pdf

Let me know if that doesn't work and i have it in PDF on my computer, i can send it to whoever needs it.