Recently I had an agm battery go bad that I was using for starting and other accessories. It was pointed out that my engine could be overcharging my agm battery causing failure. The agm battery I was using would out gas if voltage over 15. After an on water run last week, it was clear at higher RPMs my voltage was running over 16-17 volts (per my hummingbird locator)...not using a multimeter. Anyhow,after searching a lot on the internet, it seems that this motor only has the small round rectifier, and no regulator. Supposedly, overcharging on these older engines is a known problem, and a regulator kit is available ( part 173640) that remedies this situation. I tried to look online and see if I could find any instructions on mounting this kit. I am assuming that this is a rectifier/regulator combined . I was wondering if any of the johnson/evinrude mechanics on this board have ever installed this upgrade, and is it just a matter of removing the little round rectifier and replacing it with this regulator.... or is this an added part and the old rectifier stays? If any of you have experience with this, please advise. Thanks.

HHD