Help wiring AC compressor

[Noswal]

Maybe a little too new for here but here goes. I am putting a 5.8 engine from a 1990 F150 into my 1978 F100. The engine is complete with the AC compressor.
The compressor in my '78 only had one wire (power wire) and the compressor from the '90 has two wires. Anybody tell me how to wire this compressor to work in my '78?

 

[craig]

The 78 just has a power wire and the ground is thru the compressor itself. The 90 has both power and ground wires, since this is just an electro magnet, it wouldn't matter which terminal you put to ground and the other can go to your existing power wire

 

[Noswal]

Thanks Craig. That's the info I need.