aftermarket kill switch: where to buy?

My 1975 Commando does not have stock instruments. I need to wire in a kill switch, I want it to be an off/on switch. I'm looking for ideas as to where to buy one or one that will fit. I'm also confused on the wiring to the switch, it seems straight forward...yet...
so thoughts on the wiring would be appreciated!
My wiring is so close to being done. Then I'll tackle the rear brake. I've got almost all the parts to replace the stock brake setup.
Thanks!!!
Kurt

Hi Kurt,
Colorado Norton Works sells a Japanese style handle bar switch which I believe they say is a Honda product, no doubt they also include the necessary wiring info, it lists for aproximately $100. That being said the left or right handle bar switches can be sourced from practically any Japanese bike and there are boneyards just filled with them. I installed a Suzuki GSXR left hand switch that controls Hi/Lo, horn, directional, Hi beam flip, and I used the 4 way flasher button as the kill switch, I got it from Ebay for $30.

GB