Can someone explain this to me like I'm 12 years old? My 2020 has the aux batt relay on the firewall. I think it allows power to that battery when vehicle is running only. My question is; if I replace the pass side main batt and leave the driver side on in there, and it is weak, will it bring down my new battery or is isolated from killing the new pass side batt?
I'm not running emergency lighting etc so I am not sure I should disconnect the driver side batt from that side of the isolation relay?
I'm not running emergency lighting etc so I am not sure I should disconnect the driver side batt from that side of the isolation relay?
