If you intend to listen to AM/FM radio you will need an antenna. Problem is most antennas can be a problem when used on an Off Road vehicle.
Here is a great alterantive to a whip style antenna. This tiny box contains an amplifier circuit and antenna module that uses the 12 volt power wire that exits from all Rock'in Radios consoles, and also equipped on 99% of all manufactured auto-marine type radios.
Simply connect the main antenna cable to the antenna adapter that exits your Rock'in Radios console, connect the positive (red) and the negative (black) and your all set.
There is an installed piece of heavy duty water-resistant double sided tape already in place for you to peal and stick the antenna module under or even on top of the roof. There is ample wire to make the connections and placement.
You will be amazed at the ability this tiny device has pulling in distant stations.