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    Diode Battery Isolators vs Relay/MOSFET Isolators

    OP says he sees 13.5 volts at the battery. Given enough time the battery will be fully charged.
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    Diode Battery Isolators vs Relay/MOSFET Isolators

    Less voltage results in less current flow. Less current flow results in a longer time to charge the battery. Just like it takes longer to fill a 50 gallon drum at 1 gallon a minute versus 2 gallons a minute. But given enough time it will fully charge the battery.
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    BAT 1, BAT 2, ALL Switch

    As far as I know the one, two, both, all type of battery switches have been make before break type for many years. Decades perhaps. You will need to find out how your system is wired. I can see a configuration where if you switch to the start battery the electronics will not be getting power...
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    Diode Battery Isolators vs Relay/MOSFET Isolators

    What voltage are you seeing at the battery when the isolator is allowing charge current to reach the battery? Even with the voltage drop across the diode the voltage should be higher than the resting battery voltage, allowing the battery to be charged. It will just take longer.
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    BAT 1, BAT 2, ALL Switch

    Not uncommon for two 12 volt batteries to be connected in series to power a 24 volt device while one of the two batteries is used to power a 12 volt device. Not uncommon for two 12 volt batteries to be connected in parallel via a battery switch, or a Combiner/ACR/VAS/Isolator, so that both can...
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    BAT 1, BAT 2, ALL Switch

    Have you not had a boat with two or more batteries?
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    BAT 1, BAT 2, ALL Switch

    Easily tested using the ohm meter setting on your multimeter.
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    No power to electric fuel pump

    "I have a 2005 Yamaha F90 TLRD that is not getting power to the electric pump in the vst tank. I have replaced the pump and it is working but I can't seem to get power to it." Why the continued discussion about a ground? All the ground in the world is not going to cause the pump to run if...
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    No power to electric fuel pump

    If you do not have battery power to the pump then inspect for battery power from the relay. Only if there is battery power from the relay but not at the pump would I suspect a wiring fault.
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    No power to electric fuel pump

    How can a bad ground effect battery positive voltage to the pump?
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    No power to electric fuel pump

    The ECU applies the ground to the pump to cause it to run. Turn the key to the on position and the relay closes. Battery power to the pump motor. Turn the key to the start position and the ECU applies the ground. Motor starts the ground continues to be applied. Motor dies then the ECU...
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    No power to electric fuel pump

    The ECU does not provide battery power to the electric fuel pump. Battery power is from the fuel pump relay.
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    850 Wiring

    Neither of my two Mercury motors, nor my Yamaha, used tinned wiring.
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    Dual Prop Pitch vs WOT rpm?

    When you use the term DP are you talking about contra rotating propellers like Suzuki, Yamaha and Mercury use on some models?
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    Prop questions

    Red line RPM for a Yamaha 70 HP two stroke is 5500. Yamaha suggests propping the motor so that when at WOT, boat loaded, motor trimmed up to the point of best efficiency, the motor turns at or near the red line RPM. Best performance, best engine life. Even though you may never run at WOT again...
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    Left side lean?

    The trim tab anode is used to correct the tendency of the motor to turn left, or right, which can vary as the motor is trimmed upwards or downwards. Motors with conventional gear cases want to turn right when trimmed down and to the left when trimmed up.
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    2003 yamaha 50 2 stroke tiller conversion

    Negative.
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    2003 yamaha 50 2 stroke tiller conversion

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    Yamaha Trim Tilt Switch Side Mount Remote Wire Connection

    There are also bullet connectors within the control box.
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    Bleeding Oil Injection Yamaha 60tlrc

    The hose from the tank to the oil pump is self bleeding. Bleeding is to purge air in the hoses from the pump to the carburetors.
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