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2014 220 I am looking to add amp to my system I traced my wiring from origional amp that was factory installed. The positive cable goes to the circuit breaker that gets its feed from the battery switch . I have the dual battery with acr. I noticed the amp wire is connected to the #1 battery terminal which is the main house battery. My question is should it be connected to the #2 battery terminal so when just floating and not running the engine it won't deplete the house battery?

You definetly want the stereo/amp connected to the house battery, # 1 if that's the house battery. If you are out floating you want the house battery to drain and not the starting battery. If the house battery goes dead no problem you can still get your boat started from the engine battery. If you drain the engine battery you won't get started when it's time to go. The acr will manage the charging of both batteries once you get the engine going. Per your description everything sounds like its correct.

Also are you replacing the original amp with a new one or adding a second amp. If you're going from 1 amp to 2 there are additional concerns and you should make a second run of power and ground cable or a single run of larger gauge power and ground wire to a splitter and not just run both amps from the existing wires.

Thanks for the help . Running new cables to add a amp and tower speakers .

sounds good! You'll need an extra breaker or fuse on that 2nd run of cable as well just like to original one.