228 'battery isolator switch'?

[SkunkBoat]

https://www.boats.net/product/yamaha/6CE-81949-00-00?ref=89222a16c1bf8d1f705d36ba651b82943b33fab7

 

[Ky Grady]

Half,,,, You may have to purchase the aux charge wire from Yamaha unless they have changed and include the wire with the motor. Think it's an option.

 

[Ky Grady]

Ky Grady,
I am embarrased to admit that I haven't given it a good run at full speed. I have, however, run in the high 40's and am confident that it will break 50 on a calm day, or with a bolder skipper. It is nice to have the power offshore (Gulf of Mexico) with a crew of five, lots of ice and diving gear, in a heavy chop. Enough power for a younger man.

Very nice. I'm sure it's a great package.

 

[Halfhitch]

Thanks Skunkboat and Ky Grady. I will get that charge wire and study up on where it goes.

 

[DennisG01]

I had (have) that aux charge wire on my engine. It's a simple setup. I actually thought it was standard - but I could be wrong. However, I recently disconnected it as there is a possibility that it's causing an intermittent running issue. Apparently, the aux wire is known to fail internally and cause my symptoms. Whether that's the case, or not, I do not know for sure - but everything else on the engine seems to check out. I won't bore you with the details - just that it was enough for me to delete it and do something different. I installed a Blue Seas mini ACR - and maybe that's something you want to look into, as well. Your main cable already comes to your battery selector switch so you can charge either battery manually. The ACR simply connects the two positive posts of your batteries together and will direct the charge to either battery as needed - automatically and regardless of which position the switch is on. Just a thought - but this is the way many higher end manufacturer's have been going over the last decade or so. That said, I'm sure Yamaha fixed whatever issue there is (may be) with that aux charging wire and that's a fine system, too.

 

[Halfhitch]

I had (have) that aux charge wire on my engine. It's a simple setup. I actually thought it was standard - but I could be wrong. However, I recently disconnected it as there is a possibility that it's causing an intermittent running issue. Apparently, the aux wire is known to fail internally and cause my symptoms. Whether that's the case, or not, I do not know for sure - but everything else on the engine seems to check out. I won't bore you with the details - just that it was enough for me to delete it and do something different. I installed a Blue Seas mini ACR - and maybe that's something you want to look into, as well. Your main cable already comes to your battery selector switch so you can charge either battery manually. The ACR simply connects the two positive posts of your batteries together and will direct the charge to either battery as needed - automatically and regardless of which position the switch is on. Just a thought - but this is the way many higher end manufacturer's have been going over the last decade or so. That said, I'm sure Yamaha fixed whatever issue there is (may be) with that aux charging wire and that's a fine system, too.

Thanks for that Dennis. Maybe the old-school way I have done things for the last 40 years might be a good tradition to maintain. It does seem that the more "automatic" things we have taking care of important functions for us, the more we tend to get lax in our attention to the components involved. Maybe having to think about turning that battery switch at the proper interval as I have always done will help me to not get sloppy with my battery protocols.

 

[DennisG01]

Thanks for that Dennis. Maybe the old-school way I have done things for the last 40 years might be a good tradition to maintain. It does seem that the more "automatic" things we have taking care of important functions for us, the more we tend to get lax in our attention to the components involved. Maybe having to think about turning that battery switch at the proper interval as I have always done will help me to not get sloppy with my battery protocols.

Nothing wrong with that, either! I used that method for a long, long time. On odd-numbered days I used Batt #1, even-numbered-days was Batt #2. I run two starting batteries on this boat since I don't use a whole lot of battery-powered stuff when the engine is off. On other boats, where I had a dedicated house bank, it would probably make more sense to use an ACR. But, really, I just decided to try something new on this boat.

 

[seasick]

On 'MYotherboat' the motors ( Mercury Optimaxes) when cold will not start when they are on separate batteries although they crank over perfectly well. So after a period of head scratching and trial and error. I learned that when cold to select BOTH on both switches. After a brief run, I ten switch over to separate battery settings per motor.
I did eventually find a few articles about why this is and that it is specific to Optimaxes. First of all Mercury states that you MUST use starting batteries only for the motors, no deep cycle or combos. In addition, if the batteries are a tad older that may not supply sufficient voltage for the motor to start. The starter, fuel pumps, etc all work fine but the ECU is very picky and will not fire the motor if the voltage is just a bit low. There are so many oddities with those motors