11-18-2007, 10:23 AM
I am installing a battery in my enclosed trailer for auxiliary lighting and am curious if a battery isolator is required and why? I would like to be able to charge the new battery using the truck and want to be sure nothing gets messed up. My truck has the tow package with the 7-pin connector and 130 amp alternator. It seems to me that the isolation is already there because there is no power the the charge line of the connector when the key is off? The only thing I think I'm worried about is overcharging the new battery? I have a 135 amp isolator picked out but it looks like a lot of work to install. Any help on this would be greatly appreciated.