John Deere hd45 48" walk behind mower---- Replacement engine has 1 wire coming from Stator........the original engine had 2 wires which plugged into the factory externally mounted regulator which then supplied the main chassis wiring harness which energized the electric PTO clutch.....Where can I possibly find a diagram that would show me how to correctly wire this so that I can retain all of the safety switch functions???? I am certain someone has done this already......I can use a little help. Thanks for any help....