I was wondering if there was a way to install a button in my car that would activate the rear back up lights while driving? For example, if some guy decided to tail me like crazy if I'm already speeding a lot (and can't get over to the other lane), I could flash it at him, the same way some people flash their brights to cars in front of them to get them to move over. Any ideas of how I would be able to install this hack/mod?