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Peter Kennedy has been in  business since 1991 designing, installing and servicing marine electrical systems. The purpose of this blog is to offer support to both professional installers and  do-it-yourself boat owners who wish to undertake this work themselves.
Peter Kennedy has been in  business since 1991 designing, installing and servicing marine electrical systems. The purpose of this blog is to offer support to both professional installers and  do-it-yourself boat owners who wish to undertake this work themselves.

Troubleshooting your Alternator

Posted by Peter Kennedy on 7/13/2018 to Alternators
Troubleshooting your alternator

Has your alternator stopped working? Often the tachometer will stop too. First check the drive belt to see that the alternator is turning. Here are some other troubleshooting tips

Wondering how much further forward the Balmar Serpentine Kit will be on your engine?

Posted by Peter Kennedy on 6/25/2018 to Alternators
Wondering how much further forward the Balmar Serpentine Kit will be on your engine? We took a photo to explain it. Click for more.......

Adding an alternator to your lithium battery setup

Posted by Peter Kennedy on 12/19/2017 to Alternators
A discussion on the best way to incorporate an alternator into a Lithium-Ion battery setup

Altmount installation on a Universal M35

Posted by Peter Kennedy on 12/1/2016 to Alternators
Here is a photo and description of the installation of an Altmount kit on a Universal M35 on a Nonsuch 30

Serpentine kit installation on a Yanmar 4JH4-HTE

Posted by Peter Kennedy on 4/13/2015 to Alternators
Serpentine kit installation on a Yanmar 4JH4-HTE
This was my first time installing one of the Balmar Serpentine kits and I was a bit apprehensive. Although I had read the instructions several times it still isn't quite the same as actually doing it. Read how it all turned out.........

Alternator upgrade

Posted by Peter Kennedy on 2/10/2015 to Alternators
Question: I need to replace my alternator for a Yanmar 3YM30 /2006. It is a Hitachi 60amp and I am thinking in replacing it with a higher amp output. I might then need to replace perhaps the pulleys for the water pump and the crank shaft and then of course consider a serpentine or other type of belts. Would appreciate your suggestions?. Thanks.

What does an alternator regulator do and how does it work?

Posted by Peter Kennedy on 5/1/2014 to Alternators
What does an alternator regulator do and how does it work? An alternator regulator supplies current to the rotating part of the alternator. The rotating part is called the rotor, and when current is applied to it it becomes an electromagnet. Its rotation generates an alternating current in the fixed windings of the alternator, called the stator. The regulator acts as a control mechanism for this process

What is the alternator field disconnect terminal on a battery switch for?

Posted by Administrator on 12/12/2013 to Alternators
AFD Terminals Many battery switches come with a pair of small terminals labelled "Alternator Field Disconnect" or AFD. Of all my years working on marine electrical systems I have never once seen these terminals hooked up correctly. What are they for and how should they be wired.........

Installing a Balmar alternator on a Yanmar 3JH3E

Posted by Peter Kennedy on 11/21/2013 to Alternators
Yanmar 3JH3E
Here is a short video clip, some photos and a description of a project to replace the standard alternator on a Yanmar 3JH3E with a Balmar 60-100-SR-IG alternator. The boat is a Dehler 38 Sailboat and as it is going on the Annapolis to Bermuda race next summer the owner wanted to have plenty of power available for the trip.