Bill, The 7 pin connection on both of my Ford F150's has a cover with the pin out imprinted into the plastic. I'm a little confused by your post. Are your truck lights not working right or the trailer lights (or both)? Ford should be able to give you the pin outs on the truck connection. You can probably find it Ford.com. I'll take picture of it tomorrow if you want and post it.
If you are having trouble with the trialer end of the circuit, you can find the pin out for that here: http://www.airstream.com/airstream/p...lug1966-81.pdf
One word of caution about this diagram. I had to go by color, not pin position as indicated in the diagram. Lift up your gaucho and try to match colors first on the running lights, turn signals and backup lights. My job was kinda tough because I only had a couple of workinh running lights and one tail light.
Good Luck and Merry Christmas!