The PGPI is a 6V to 12V converter for vehicles that still have a 6V, positive ground electrical system. All of our radios run on a 12V, negative
ground electrical system, so this device is necessary if you are still running positive ground. The PGPI positive ground inverter
comes with detailed wiring instructions. We recommend using the MEMMOD memory module in conjunction with this device in order to retain your presets.
If you do not use the memory module, you will lose all memorized stations when the vehicle turns off because it will not have a 12V constant supply.