In the past, with a non-electronic diesel, I upgraded to a Balmar heavy duty alternator and was very pleased. I tried it on my NT37-199 with an electronic Cummins QSB5.9 and the alternator played havoc with Cummins electronics. The engine was built with a Delco Remy alternator, so I bought a heavy duty version of the same alternator and paired it up with a Balmar external regulator. It has worked perfectly. Highly recommended Best wishes Stephen Hill NT37-199 Tug’n Sent from my iPhone > On Dec 7, 2021, at 11:53 AM, Sand Point Charters, LLC via Sentoa <sentoa@lists.sentoa.org> wrote: > >  > > I have a 1999 32-141 with about 1600 hours on it. > > I'd like to install a more robust alternator with external regulation. > > What do you recommend for this? > > I have (2) Interstate 4D deep cycle batteries, plus (4) 6 volt deep cycle batteries (I believe the above set up was original) > > Plus I have a starting battery. > > > > I've also added 700 watts of solar power. > > > > The boat has the standard power consumption - Fridge/freezer, lights, bow thruster, power windlass, > > electronics (radar, radio, gps, fish finders) > > microwave (through an inverter) I also added a hydrolic-electric autopilot. > > > Captain Brian Helminen > USCG Certified Captain, Sand Point Charters, LLC > > Author, How to Raise a Happy Family > Order here: https://gum.co/dyTfE > > 906-370-2257 or > 906-482-2424 > Where to find Lake Trout (FREE Study) > > On the web: www.sandpointcharters.com > On Face Book: FaceBook.com/Sand-Point-Charters > On Twitter: Twitter.com/fishlaketrout > > Mailing Address: > 22950 Airpark Blvd. > Calumet, MI 49913 > > > _______________________________________________ > Sentoa mailing list -- sentoa@lists.sentoa.org > To unsubscribe send an email to sentoa-leave@lists.sentoa.org

Non-electronic Cummins, heavy duty version of Delco alternator and external Balmar regulator. Made a world of difference – did it 7-8 years ago and still going strong. Arriving at destination, using inverter (generator off) along the way, with full house batteries is great. David Cheyette Maisy 37-100 Friday Harbor, WA