This switch plugs directly into the ODBII port and can be mounted in your dash or elsewhere in the vehicle and will switch between 5 tunes on the fly! This is not a pass-through switch. If you have a Edge, or other data monitor. This switch will not work for you. You will need the CSP5 Pass-Through option to run OBDII monitors or OBDII Data loggers. We offer the CSP5 switch with pass-through specifically for this purpose.