You can buy the Hitachi style connectors from E-Bay and then wire a switch in easily 
I just bought an engine stop switch and stuck that on the LHS bar so can switch mode on / off - tend to leave on most of the time with the bike in touring mode (switch overides tour mode) then just turn off switch when on motorway - not that I can tell any MPG difference, but you never know it may save me a few pence on a long run.
I just bought an engine stop switch and stuck that on the LHS bar so can switch mode on / off - tend to leave on most of the time with the bike in touring mode (switch overides tour mode) then just turn off switch when on motorway - not that I can tell any MPG difference, but you never know it may save me a few pence on a long run.


