#Cole hersee battery isolator relay wiring diagram generator#
#Cole hersee battery isolator relay wiring diagram upgrade#
#Cole hersee battery isolator relay wiring diagram series#

#Cole hersee battery isolator relay wiring diagram upgrade#

The entry level coaches often have nothing to charge the engine batteries and they often upgrade to the Big Boy. I am certainly no expert on these things but this is discussed at length in many Monaco forums. The OP's coach likely has not only a large alternator but a 3 stage charger so any losses due to the BIRD would be no big deal. The BIRD is a good design and the link that I provided is to a unit that is/was used by many mfrs. In a DP those small relays give up quickly. The OP's coach probably has a 200 amp alternator and a bunch of batteries in each bank. Probably Cole Hersee and designed for low amperage. The Tekonsha relays that I see online are small generic units. It is OEM on higher end Monaco products and is one mother of a relay.

I dont see any relays? I still do not see anything wrong with the Big Boy.

#Cole hersee battery isolator relay wiring diagram series#

This setup is shown in the Tekonsha wiring diagram.Įwnblethen: You provided a link to a whole series of light switches,etc.

Using the method shown in the Intellitec delay relay schematic is the easiest way to go being you have it coming. I also have a separate relay that jump starts engine battery from coach battery using a momentary switch at the driver's dash.

#Cole hersee battery isolator relay wiring diagram generator#

I have a separate system to charge both batteries when on shore power or generator automatically. The isolator time delay would be used in conjunction with the relay from Tekonsha.Īll i want is to automatically charge the house batteries while the alternator is working the engine battery during travel. There is wiring diagrams shown in the installation information. The four pole version requires a ground to be run to one of the small posts. The one pictured is a three post where it is mounted to a conductive surface. You would wire each battery system into the large posts and a control from a circuit that is 'hot' in the run position. A switch (relay) such as this one from Tekonsha will give more positive operating then the diode based and normally would be more efficient. Battery charging problems is one of the most posted complaints.Ī Big Boy is not the best relay for charging the coach batteries from the chassis. Pick any make of DP and go to a forum for that brand. will come up with a system that works well. All of that info is on the Intellitec site.

I think the battery banks remain connected via the Big Boy until voltage in one drops by a certain amount. Monaco used a lot of different systems but at least this one is easily replaced. I think this the relay you need for the Big Boy. You need a standard double pole double throw momentary switch. PS> made correction to the link for bigboy Open when my engine is not running (thereby isolating the batteries) and closed when the engine is running. What i am unsure of is - will this controller be able to keep the relay They gave me many choices and picked the simpliest one & ordered the intellitec isolator relay delay SO i called intellitec and they said, this big-boy relay requires a controller. I figured this can handle my 200A alternator and better yet it is made in the USA. I just took out the diode based battery isolator and put in a intellitec big boy relay. RV.Net Open Roads Forum: Class A Motorhomes: Intellitec battery isolator relay Open Roads Forum