right side has the sub, there is black plug with round pins, they could get corroded. there are no electronics in that well but a sh!tload of fuses and wires... even if the sub is shorted, it probably will not kill the amp... fuses... different story...
but, water on the left side - is bad news... a lot of wires, plugs and the modules... you might need to swap the modules to see if yours is fried or not... and still, running a risk of frying a new amp...

this diagnostic can be a major PITA - trace each wire to its proper destination. in the process making sure, it is not shorting to other wires and to ground... keep WDS handy... pain in the arse...
i wonder if anyone has a better opinion or solution - what can be done here?