I did a test on my batterys and found that my audio batt dropped to 6 volts under a load and my other batt only dropped to 10.
So I bought a heavy duty deep cycle and decided to replace my audio batt. When I pulled to stock batt out of the battery case I found about a quater inch of battery acid in the bottom of the case.
BINGO, I believe I've found the culprit.
Going to try it out this weekend, I'll let yall know how it goes.
2012 lsv, 330 indmar, oz tower, gravity III, 1100 surf side, acme 537, kicker kmt6 tower speakers, 6 alpine 7"s in cabin, 2 Sony 12's, wetsounds ws420, 3 amps.
Sold 2007 outback