irishrose,
You need to wire it just like it was. It looks complicated but the way it's done allows everything to work properly.
QuilterMomma,
The foot controllers Sew-Classic sells do not look like OEM units, but they work the same. They use two wires that simply connect with screws inside.
The hardest part to putting on a new foot controller is putting in the stress relief or tying an underwriters knot.
Joe