He cut off the connector? you mean there are individual spade terminals that plug into the terminal fixed to the bottom of the switch? The switch on the '79 650 should be the same as the one on the 75-77 550F and 77-78 550K (the warning light dash is the same, so I assume the switch is too.
You can find a copy of the color wiring diagram here:
http://circuitswiring.com/circuit-diagrams/14/2011/01/Honda-CB65079-electrical-wiring-diagram.jpgDon't use generic spade connectors. Go to
www.vintageconnections.com and order the proper male and female bullet terminals. If you need the female end of the harness that plugs into the switch, vintage connections sells the plastic housing and the proper female spade terminals that fit it so that you can get that part of the harness back to stock.
The connections are pretty straight forward once you spend some time with a diagram.
Red = power in. This comes off a terminal at the starter solenoid
Black = power to the fuse block
brown = tail light (there is also an unused brown wire in the headlight shell)
brown/white = front running lights and gauge lights
If you need to know which terminal on the switch goes to which terminal on the harness I can answer that for you later when I get home, or someone with easy access to their bike can tell you now.
