I installed a sound system in my boat a year ago and it appears to be taking more juice out the battery than my 1986 Mercury Outboard can give back to the battery. <br />Is there (supplemental) alternators available on the market that can be added to these older motors to sustain higher voltage needs for the accessories within my boat?<br />Any suggestions would be appreciated - and it's great to see that this forum is still alive and kicking!<br />akendall