[RE-wrenches] 2 wire to 3 wire start on Older ONAN 12.5JC

Tump tump at swnl.net
Fri Nov 16 05:35:19 EST 2018


ATKINSON ELECTRONICS, INC.
Web Site: www.atkinsonelectronics.com <http://www.atkinsonelectronics.com/> 

While these might seem complicated they are well thought out and  easy to program despite the many pages of instructions. A simple jumper wire and then pressing the select button will scroll you thru the various settings. Using a DVOM one sets the voltage 0-5 vdc for the setting. One can set them up for monitoring house battery voltage, starter battery, daily run-monthly run. Once you understand and are not overwhelmed by the enclosed paper work they work well.

Need fuses to protect the unit and a momentary on button to reset the unit, we usually install them in a plastic box w/ a clear cover so we can see indicator lights & or lock out light requiring a push of the momentary button. 

> On Nov 15, 2018, at 4:01 PM, Dana <dana at solarwork.com> wrote:
> 
> All Wise ones:
> I have a client who purchased an ONAN 12.5JC that was in standby service from a SoCal school desert installation. It turns out it is a 3-wire start. 
> I know there are a few 3-wire to 2-wire start converter boxes out there and some are VERY complicated to program & are marginally reliable or appropriate due to phantom loads for an off-grid installation.
>  
> What are your recommendations, please?
>  
>  
>  
>  
> Dana Orzel                              Great Solar Works, Inc. 
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