![]() ![]() To help make understanding the diagram easier, basic symbols are used in the design. Knowing this information is important when it comes to proper setup of electrical systems. ![]() A single diagram may contain multiple isolated systems and power sources. It employs lines, arrows and shapes to represent various devices and circuits. Understanding the Cole Hersee Battery Isolator Wiring Diagram The Cole Hersee Battery Isolator Wiring Diagram offers an easy way to understand how various electrical systems are connected to each other. All of this information is useful when it comes to setting up a boat's electrical system properly and efficiently. In addition, there are diagrams that feature power sources that can be switched on and off to configure the batteries and set specific charging levels. The diagrams can be configured to include additional battery systems if needed. This type of wiring diagram features two battery systems that can be used in conjunction. The Cole Hersee Company is known for producing quality marine electrical supplies, and the Cole Hersee Battery Isolator Wiring Diagrams are no exception. Today's boaters can benefit greatly from learning the basics of this diagram in order to stay safe and keep their battery system running at peak performance. It is often used to ensure battery systems are installed correctly and with longevity in mind, while also providing an easy way to know what each device is connected to. UPDATED: Note that I later added a Alternator Charging Switch on the dash so I could turn off the charge at times.Explaining the Basics of the Cole Hersee Battery Isolator Wiring Diagram The Cole Hersee Battery Isolator Wiring Diagram is a crucial part of setting up any boat's electrical system. Its rated 200 amps continuous, which is about twice the current I have ever seen. ![]() One of the easiest upgrades/repairs to date. (I had purposely run down the batteries a bit) When I started the engine I was rewarded about 30 seconds later with the huge surge of Mercedes current. It literally only took a few minutes and the swap was done. Then I pulled the negative off the house batteries.Īt this point the positives are still hot but with no battery negatives connected its safe to remove the wires, although I still carefully avoid shorting anything. You don’t have to remove the seat.įor safety, I removed the Mercedes engine ground disconnect near the gas pedal. On my RV its under the passenger seat and easily accessible via a side panel. So in a case like that I could wait until I got on the highway at least where alterbator is more likely to run cooler.īut I haven’t smoked the Mercedes alternator yet so I didn’t get around to it this time.Īs it turns out, this is an extremely easy upgrade. For example when the batteries are nearly dead I am a bit sheepish about letting the alternator go all out at 90 amps which is above its recommended charge rate. I may add a switch later to turn off the relay. The activation or coil apparently doesn’t matter either, although I connected it the way I had seen on a photo on the Internet. Since its a relay it doesn’t matter which side you connect the big cables. The relay doesn’t come with any instructions. Time will tell I guess, but they are cheap enough that I bought a second to carry a spare. Supposedly the Cole Hersee 24213 12V 200A solenoid is more reliable. Many people report it only lasts a year or two. (Although sometimes it would).įrom posts on the internet I guessed that would be the White-Rodgers relay that LTV installs. (I count on the solar to top them off.) But in this case the alternator completely stopped charging. Its always a little unreliable on my Lithium batteries. Just like clockwork, after about two years of ownership I noticed my alternator stopped charging my batteries reliably. ![]()
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