Yeah, unplug everything and remove the rubber grommet. There will be a set of wires for each set of bulbs that look like they don't go anywhere and are extra. That set are the ones that plug into the red side of the ballasts and interface with the bikes wiring.
The other side of ballasts wires go to the bulbs.
So far no issues witj interference with the radio. The seller did send me a message of a part that they sell that will eliminate any of these issues should they come up. They plug inline.