Battery Charger Wiring Question

[Ricochet]

I replaced my Pro Mariner 50 amp charger with a new Pro Mariner Pronautic 1250 C3, (pro mariner was very helpful in confirming the selection of the new charger) I have an orange wire comning off one of the banks that I can not trace where it goes. The other two banks go to the batteries. This wiring setup has been that way for the life of the boat. I wired the new charger the same way and all works well. I have talked to Pro Mariner about it and they do not know what the orange wire might be for either.

Any thoughts

 

[MLauman]

Are you saying the orange wire is directly connected to one of the battery banks? If so, then it might be a 'memory' wire - ie. runs straight to the stereo head to preserve radio settings when the battery switch is off.