2) Get a micro 12v switch (that will fit into your handle bar, or grind one like I did to make it fit).
Get the switch wired. Push on the wires going into the throttle case so the loom set with zip tie comes out.
Again very gentle. Behind the wire loom space (after holding the wire loom end to the side), drill a hole.
Best way is to first remove the alu ring that fits around the handle bar (unscrew the lock pin, then wiggle
the ring out. Drill hole in thumb case from inside.... gently. Then drill hole in alu ring, make sure you drill in same place
- Put it back together, find position for throttle on handle bar, drill hole in handle bar. Slide throttle back on handle bar, align the holes. Thread a 12v wire in thru hole (tru case of throttle, and out tru handlebar). twist the wires from switch onto your "guide" wire and pull the wires tru handlebar and up into throttle case (back and fourth until it comes up). Twist one end of switch wires to one end of the green throttle signal wire, and the other onto the other end of green signal wire, slip shrink tube over the twisted wires (if you solder this it will be a pain to fix/repair). Use hot hair gun to shrink the tube on the twisted wires, to heat with solder gun you run the risk of burning something that you do not want burned or melted. 4-5 sec with hot air gun is enough and blow sideways, not straight into the case.
3) Gently pull the wire loom out again (hold case and wiggle/pull) on the main loom wires from outside the case,
so that the loom end inside the case goes back to it`s original position, then gently tuck the new wires into same space. Pop the grey top (with battery lights) onto the case.
4) I used a bottle cap on the back of my 12v kill switch (so that the switch don`t disappear into the handle hole).
Put some glue on the cap and pushed cap and switch in (do this fast enough so you don`t end up with a switch protruding way out) - mine ended up a bit more "out" than I wanted to
5) slide on your holks (dunno the English word) the soft grips at each end of your handlebar
Cut a piece of rubber (from and old tire) to fit the hole at the end of the handlebar over the switch. If yoy measure right it should fit snuggly and stay there on it`s own, you can also dap a small drop of super glue onto the switch cap and stick the rubber cover on, be careful not to glue the switch in... Or glue a bit on the rubber so it is glued to the slip on handle grips.
6) Bob`s your uncle!
NOTE: this is pretty much a permanent set up. Do not complain to me if you have to buy a new throttle and handlebar