transmission wiring help please

[danielgast46]

i recently bought a 1989 f 350 crew cab dualy and it used oil so bad i couldn't drive it any where and i can not afford to rebuild at this time. it did not smoke or leak but it would get rid of 4 quarts in about 30 miles so i am puzzeled on where it was going not wanting to ruin the motor i did a swap till better times
it had a 460. with automatic- now it has a 1987 5.0 with automatic
evrything is wired engine wise .the 460 engine harness fit the 5.0 with some mod's. but the tranny wiring has me stumped there is like 4 wires for the 5.0 tranny but the 460 tranny has at least 14. the speed senser at odmeter cable no prob but nutral safty switch and the plug fot the tranny
are the confusing ones. the truck starts and runs with all the wires hanging off the tranny and the nutral safty switch from the 460 pluged in just hanging there to. and will i still have to change the engine control module ?
any help wanted. i have had to borrow my daughters truck for now but she needs it back and i am on a fixed income so i have to do this with out money