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post #3 of Old 01-17-2014
Learning the HARD way...
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Re: Engine start shuts off chartplotter

Engaging the starter is pulling the voltage available to the instrument circuit below what is needed to keep the chartplotter on. I suspect that you may not have a fuse on your battery bank either....

Is this a new symptom, or has this come about suddenly?

Where to start:

Fix the ground to the engine block. I suggest adding a negative bus bar, and connecting everything to that.
Inspect the cables that run to the battery bank for corrosion, both at the connectors, and in the cables themselves.
How healthy are the batteries in the bank? Have you had them load tested? (

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USCG Licensed OUPV Captain, ASA 101/103/104/105/106/118 Instructor - Also certified in Marine Electrical Systems

Last edited by eherlihy; 01-17-2014 at 10:16 AM.
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