3 PART QUESTION USING.... Omegaforce radio,(w/rfx75) has a variable of 1-18w dk, and 0-104w pep! Usually set at 1.5W dk swingin 40W pep 1.. Which would be the better amp for the radio, 1200 or 1600? My vehicle is Cummins Diesel with 130 amp alt, so already have 2 batts. 2... How would the amp be connected to the batter(ies) 3... What would be the DK watts, and PEP watts, for each amp.