My bike came with the Honda OEM accessory wiring harness with there cig. power outlet, it don't cut it for powering my GPS it cuts off alot from the cig. adapter vibrating lose. I want to wire in my Garmin hard wire power cable, can I just tap into the oem accessory wiring harness? I don't believe I'll be using the Honda Cig. adapter and my Garmin hard wire power cable at the same time.....or should I find a separate ignition source?