Simply add the stereo power leads to the #2 post on the switch.

Never run a power lead from the rear of the boat to the front without a fuse or circuit breaker... Never.



GT

Yes this why I brought this up. Now do you fuse the positive or the negative?


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A fuse on the positive lead does not protect your equipment from a short circuit on the positive lead. If you short a positive lead to ground you have just taken your piece of equipment out of circuit. A fuse protects a piece of equipment from increased current through the equipment (i.e. a bilge pump that has debris stuck in the impeller). Any increase in current will be felt on the negative side of your equipment first. A fuse on the negative side makes perfect sense but if you are uncomfortable about it fuse the positive side or both. Just make sure the fuse is the right size. Giving were talking fiberglass boats.


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A fuse on the positive lead does not protect your equipment from a short circuit on the positive lead. If you short a positive lead to ground you have just taken your piece of equipment out of circuit. A fuse protects a piece of equipment from increased current through the equipment (i.e. a bilge pump that has debris stuck in the impeller). Any increase in current will be felt on the negative side of your equipment first. A fuse on the negative side makes perfect sense but if you are uncomfortable about it fuse the positive side or both. Just make sure the fuse is the right size. Giving were talking fiberglass boats.


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I'm going to come off sounding like a dick here. Not my intent. I'm tired.

A fuse on the negative side does not protect the equipment. If high current is realized on the negative side, the equipment is already FUBAR.

I know where your going, but no.

The whole idea for the fuse on the positive side in a boat is to protect the wire. That's it.  If the positive wire becomes shorted, the wire can potentially burn and catch the boat on fire.

GT

Mine are inches from perko on all side. If you find switching your perko a inconvenience... Look at all the other things you might find that on to.  Boating is a constant test of obligation/requirements. 

with my current setup (no isolater), will it drain both batteries being as they are connected by the negative wire? Also maybe i dont have it wired correctly. Do i need to run the positive wire from the amp to the perko, and then a shorter positive to the battery. I will take some pics later of the current setup for clarity.  sorry if my questions are ridiculous but i am lost on electrical stuff.

The idea of the battery switch (aka Perko) is to provide the ability to switch batteries and turn the system off.

So it's not really ideal for using in this case, but will work.

You can hook the stereo equipment to the battery or the switch, it's the same thing. I just do the switch because it looks cleaner (imho).

DC volts travels from positive to negative, so you're fine with the grounds all bonded together that is the correct method. .

GT

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