Got a photo? Because even on the "Luxus" model there should be only one switch on each bar: the indicator switch on the right (three position toggle) and the light/horn switch on the left (2 position toggle for high and dip beam, plus 2x push-buttons for horn and high-beam flash) - you can double check by looking at the simplified wiring diagram:
http://www.sweller.co.uk/mz/images/wr_tsd.gifIf there are other switches, they're after-market and added by an over-zealous owner
The TS150's never came with kill-switches, you just turn the main ignition key off to kill 'em. Check how many low-tension wires are connected to your ignition coil - more than 3 and you might have a problem...
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