Straight answer please!

I bought an adapter years ago at O'reilly auto parts but i think it was wired wrong burned up the trailer harness. It may have been just a fluke.

Ok well that's a start. Thank you ntex.

Adapters: Hoppy 47375, Hoppy 47465, or Tow Ready 20141 available at Walmart.com

A few years ago I bought one at the local Walmart. Maybe your local Walmart or parts store stocks them also.

Craig

Going the other way is more common (for 7-pin on vehicle, 4-flat on the trailer). Adaptors all over the place for that. But I've not see (nor looked for) an adaptor for a 4-flat on the vehicle, and 7-pin round on the trailer. But if it exists, you've find it at www.etrailer.com.

As far as your ret#$%&* small receiver, I agree. The 4th gen V8 trucks have the standard 6-speed trans, and do not require an axle gearing change with the HD towing package. They should have included the HD towing package as standard, since it only included the bigger hitch (same price to Ford, I'm sure), and some additional wiring for 12v and brakes. But...they didn't think that way.

Now, if I may be so bold:
What is your situation, where you were required to move up to a 2" Class III receiver, but you say you DO NOT need brakes. That does not compute in my mind, as an engineer in the automotive braking field. If you do not need brakes, then you must have a very light trailer (less than 2000 lbs), in which case the Class II standard hitch and tow package are sufficient.