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New Boater Intro and Questions

Old 09-01-2014, 06:45 PM
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Hey THT members! New member here and just want to Introduce myself. I just got a 22' offshore with a 1988 120 hp Johnson outboard...for free! Some friends of ours just needed to get rid of it so I was happy to oblige! It needs some electrical work and a good cleaning/polish/wax, but all-in-all it's in good shape. I have a good understanding of 12 v systems but mostly in an automotive aspect where an alternator takes care of the charging. So I'm confident I can do the wiring, just want to be sure I handle the charging and maintenance of the battery the right way. I also am thinking about adding a battery and wanted to get some input on the best way to do this. Thanks in advance for any advice given. I'm looking forward to getting to know you guys and to learn from the masters!
Old 09-02-2014, 04:48 AM
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Perhaps I missed this, but is there a reason you think the Johnson would not be able to charge it's own battery? Unless the alternator is shot, then there is nothing I could see as an issue here. Want to add an extra starter? Just add a perko 1/2/off/on switch to the mix
Old 09-03-2014, 09:50 PM
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One of my main fears is getting out off-shore and having a dead battery. We plan on doing some night fishing and other things in which lights and equipment will be running so I want to add a deep cycle battery to the setup obviously to run all of my house load. The boat only has one battery as of now and it is only a cranking battery. The previous owners ran their entire load off of this battery and never had a problem, I just don't want to take the chance. I guess the problem is I don't quite understand, and haven't found a good resource online, that can tell me exactly how many amps the starter motor draws so that I can know what my system will handle. Obviously the system will work the way it because the previous owners did it this way for years. I'm just thinking about the longevity and being able to take it out a long way and have plenty of accessory power to last all day/night and power to return. Thanks for the input, I hope my questions aren't too dumb ...take it easy on me, I'm a newbie!

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