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Old 04-20-2018, 10:03 PM   #1
Lt. JG
Join Date: Apr 2018
Posts: 17
Default Batteries

So my 05 1800sr3 has one battery but looks like it can hold 2 or should have 2. Question I have is if I put a second battery in there how do I hook both of them together?

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Old 04-21-2018, 03:41 AM   #2
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Join Date: Feb 2012
Location: Essex, Maryland
Posts: 7,788

No they should be wired to a battery selector switch which has four positions, off, batt 1, batt 2, and both. The negative of both batteries will be tied together to the engine block.

1997 2400 SCR
5.7 Vortec / Bravo 2
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Old 04-21-2018, 12:39 PM   #3
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Location: Chesapeake, VA
Posts: 487

You can start by looking at Blue Sea Systems battery switches. They have some videos and literature that explain what the switches do and how to hook them up.
2006 Bayliner BR205
A1 Gen 2 1.47
5.0 carb engine
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