I would like to install an on/off switch on handlebar to control power curve. I currently have the grey wire unplugged, and I love the power for most applications. However, there are times that I would like the grey wire plugged in, for example, snotty, slick, loose, technical stuff. But I can not always stop the bike and plug the wire back in... Several people have recommended installing a switch so I can switch back and forth. I understand you have to stop the engine first. Has anyone out there done this? If so, what switch did you buy and how did you install? Thanks a lot.