Join Date: Jan 2018
Location: Coopersville, MI
I believe you are correct that the two thick wires go to the reverse switch on the transmission, but the connector on the end appears to be cut off. I can't tell the wire colors in the photo, but if memory (as I don't have a schematic in front of me, serves me right one is purple in color. The red wire would require me to have a drawing in front of me and have to see where the other end terminates.