I sprang for the dealer installed hitch. I thought for $1200.00 it would included everything I need. Well guess again. I pick up my car and find there is no place to plug in wiring from my trailer. The wiring harness that was installed is just pluged into some plastic plate. The plate just holds a big round plug to the hitch. I ask my dealer what adapter to I need to either plug in a four way flat or a 6 way round. The dealer did not know. After they spending an hour asking around the shop, they said go to Uhaul. I go to Uhaul and they have a nice universal adapter that will plug into the large round plug I have, but the four screws don't line up to the screws on the hitch. I call back to the dealer and they said they would look into it. That was week ago and still have not heard back from them. I have not seen this part that I need in the drivers mag. I think the hitch kit should have come with this. I went to the dealer so I didn't have to deal with this type of problem. Does anyone know what part I need? Should it have been included? Please help!!!!