Monthly Archives : July 2016

Cleaning Yanmar 3YM30 Heat Exchangers


Two engines means two chances to get it right. Or to screw it up… Clip the zip tie holding the coolant hose Remove the alternator belt guard Remove the lower bolt from the back side of the alternator Loosen both the front and back bolt holding the alternator Remove the alternator belt Remove the alternator cables Zip tie the alternator…

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Understanding Lithium Battery Charging


A ridiculous amount of time has been spent studying the electrical system on my boat. The lithium batteries brought a whole other level of research to ensure I didn’t create a safety hazard. I make no promises to the accuracy of this information but I am reasonable certain it is accurate. Seven days in, I typically don’t see the voltage…

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What does 950 watts of Solar bring your battery bank?


In a cloudless day, with the sun directly overhead, my calculations (based on the “typical” stated outputs numbers and not the “ideal” laboratory numbers) show I have the potential to bring in around 60 amps (at 12V). It is hard to know the loss from the solar controller or the wire runs so I was excited to see what would…

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Solar Panel Installation – Super Charging the Power Systems


Boat in San Diego, new stainless hardware acquired from Marine Exchange, MC4 crimp tool (and connectors) means I’m ready to go! Lug the panels to the top of the solar arch and slide them into position. Jump down to start threading the bolts, using the dingy as a ladder, and find that we have a problem…the outside holes don’t line…

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Seawind 1160 Electrical Schematic (Wiring Diagram)


Wow, this drawing turned into an epic project. I started with the current Seawind 1160 electrical schematic (thank you Seawind for providing the DC drawing!). My boat had a second inverter installed plus my solar upgrades and lithium batteries. Spent a good deal of time tracing wires to confirm the accuracy of my schematic drawing and even fixed a couple…

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