Bah, I should have wrote this down for you....
The short wire with the spade goes into the "E" pin of your ALDL connector. This is the one thats 2nd from the left on the top row when looking at the connector.
The other wire with the spade connector goes to the fuse box. Plug this into the terminal marked "IGN"
The last connector (with the eyelet connector) is your ground.
Let me know if this all makes sense. If not, go here....
Buick Grand National Scanmaster Manual - Full Throttle Speed Tech Support
Bill