As I am getting things together for my accessories and 2nd battery, I cannot get figured out why to have relays in the system with the PDM. I understand the isolator and how it works, as well as the PDM. Just don't understand what the relays really do. I have tried google searches, but can't really find anything other than what they are. I know they provide a break in the connection, but am having trouble understanding why this is needed.
Please help explain the role these play in the system. Thank you
Please help explain the role these play in the system. Thank you