| Don't buy a kit.
All you need to do is run a wire from the side stand into the neutral switch. When in neutral the side stand switch will earth out through the neutral sensor and allow the bike to be started. You will need to use a diode to prevent the neutral light showing when the side stand is up. all in all costs about 50p.
when done if the bike is put into gear when the stand is down it will kill the engine(just like every other bike).
hope this helps. | 
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