Yooper, what size wire is running to from your buss back to the Perko switch and battery? I'm running a Jav and 800.4 and I'm using 1/0 to a distribution block and then 4AWG to the amps. Those two amps can draw some current so you may want to look at that. Maybe I'm not seeing a separate ground wire in the pic but that looks like 8AWG running back to the battery.