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Go Back   WakeWorld > >> Boats, Accessories & Tow Vehicles Archive > Archive through July 28, 2009

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Old     (lakelife)      Join Date: Feb 2003       07-15-2009, 11:54 AM Reply   
I have read the threads on ww.com about grounding your stereo equipment to the battery, but my situation seems a little different:
I have two batteries (one deep cycle for the stereo when i'm beached, and one cranking battery for starting) hooked up to a perko switch for the starter/alternator. The accessories/stereo/etc power and ground wires are all hooked up directly to the deep cycle battery. The problem is, when the engine is running and the perko is set to battery 1 (the cranking battery) I get little to no hum in the speakers. However, when I switch to bank 2 or "all" to charge my deep cycle, I get a loud hum which I presume is a grounding issue.

Why would this happen? I have the deep cycle ground wire running to the cranking battery which is what perko recommends, I just don't understand how the humming is only isolated to one battery...

Please help, I'm getting so frustrated!

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