KLR Loaded Lower Dash Kit
The KLR Loaded Lower dash kit is the perfect way to plug in a GPS, Phone, or all of the above. If you need more 12v plugs on your KLR here is solution for you. This lower dash kit shows your batteries voltage, has two 12v plugs and 2 waterproof switches. Personally I would plug the GPS into one of the 12V plugs and pick up a USB Plug for the other plug.
Mounting
The KLR lower dash kit will mount using all of your stock hardware so no modifications needed.