Olson070707 Posted May 13, 2019 Share Posted May 13, 2019 I recently upgraded the stereo in my 2017 H20 21 sport. I also installed a Blue Sea Systems add a battery kit. (#7650) I couldn’t find any good ideas online for inspiration so I thought I would share my project in case there is anyone interested in a similar setup. I chose to go with 2 Infinity Marine amplifiers, (one 4 channel & one 5 channel) Infinity Marine speakers with LED lights. I simply swapped the 6” speakers in the bow & by the front seats & then I added a pair of 8” speakers under the backseats on the sides of the cooler. I stuck with the original head unit. A 10” JL subwoofer is going in the rear starboard compartment. The amplifiers I installed in the storage area under the helm. That was a PITA! I glued some composite boards to a few spots so I could install a panel that the amps mounted to. The wiring from the head units to the amps I ran under the deck via the ski locker & the power wires came from the rear via the starboard side. I replaced the single battery I/O switch with the 7650 in the same spot as the oem. The 2nd battery now runs all the accessories while the oe battery runs only the starter & ignition. At the same time I lengthened the fuel tank vent hose b/c I was having issues last year with water getting into the vent hose leading to issues when refueling. Quote Link to post Share on other sites
Olson070707 Posted May 13, 2019 Author Share Posted May 13, 2019 Here is the amps installed on the panel I made. Quote Link to post Share on other sites
Olson070707 Posted May 13, 2019 Author Share Posted May 13, 2019 Well, I guess I can’t add anymore pictures. I compressed the last two pics down but it won’t let me add any of the battery pictures or speakers. Quote Link to post Share on other sites
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