I'm an electronics moron, so I'm hoping someone can explain the how-to like they're talking to a child or a dog: I'd like to install a switch that would be like cutting the tone knob a quarter turn for the bridge pickup only. I have a soldering iron and fire insurance. Help? I should note that this was a Mexi Nashville Tele, but nearly all the parts have been changed except the wiring. So, five-way switch.