Motor is a 1966 Evinrude 40 hp electric start. I Just finished with replacing coils, condensers, points and plug wires as well as putting in a carb kit but noticed that I had this black ground wire that I don't know where it connects to. One end connects to the powerhead and it about 4"-6" long. I took pictures before I started but I cannot find the location of this short ground. I have the service manual but no luck there. Does it possibly connect to the bottom of the magneto plate with one of the long screws that hold the coil in place? Any help is greatly appreciated.

