OK you have an old Jump Start. It is used to aid the hand starting of your engine, it is not a full time ignition, after the engine starts you run it on the magneto.
I don't know if your JS is stock or if sombody modified it. The stock wiring is.....
R,B,W wires go from the trigger sensor to the CH module. The 3 way switch should be labeled ST and KILL, with run in the middle, black to engine ground and the green to the terminal lug on the magneto coil. The R,B wires go to a jack where the booster battery(6v) box plugs in.
Starting drill. Switch to ST, plug in booster battery, start engine, switch to run (middle), unplug booster battery, go fly. After flight move switch to KILL and stop the engine.
Good luck