So I installed new electronics and underwater lights and my current battery setup is not keeping up. I have Yamaha isolator leads that I bought last year but never installed or should I use a blue sea add-a-battery system?
From your diagram, it's not apparent to me that you have a backup battery to start your port engine. In a real disaster a set of jumper cables would do very well to connect all of 1 side across to the other side. Via email, text message, or notification as you wait on our site.Ask follow up questions if you need to. I have the wiring correct at the switch, where on the motor should I check for voltage and what is an acceptable range of voltage?
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions. As long as the OFF-1-BOTH-2 battery switch is kept in any position other than BOTH, the two engines and two batteries will be isolated. Powered by: Ultimate Bulletin Board, Freeware Version 2000Purchase our Licensed Version- which adds many more features!

Whether you're researching a new boat, or are a seasoned Captain, you'll find The Hull Truth Boating & Fishing Message Forum contains a wealth of information from Boaters and Sportfishermen around the world. When I crank my port motor, one of my garmin units turns off and my vhf restarts, Got the boat last year and the battery situation is kind of a mess.
Contrary to some BEP diagrams, you want the VSR on the downstream-side of the starting batt's disconnect switch (which is not the way the Chaps drew it). It will not turn over and the trim does not function, I have checked battery and it is fully charged . It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. I liked that I could ask additional questions and get answered in a very short turn around.
Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The voltage at the start solenoid should be 9.5+ volts # XXXXX while cranking the engine, if lower check battery voltage and for voltage drop between the start solenoid and the batteries.

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Using the auxiliary charging leads direct from my motors to one house battery so both motors charge their own starting battery and both aux leads charge the single house.
Post back with questions.Be sure that you have a good ground connection, remove the connections and clean with a wire brush to be sure.
To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. It seems like the engine is not getting enough juice as the trim just kind of whines when the switch is turned.
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