Dual Batteries

[Sean]

OK, I know I just read this recently but for the life of me I cant find the thread, so I will ask. I remember something about when running dual batteries you can connect all of you wiring to the connector/switch and then run the main line between the batteries and the switch. If this is the case, can setup my switch in the bilge area were my current battery is, connect all the existing wires, then run the main lines from the switch to the main fish box area were I want to relocate my batteries to?
This way I can eliminate the extra weight and eliminate the use of the main access to the bilge area located in the splash well.
Does this make sense? Because I just confused myself even more.
As always, thanks for your help and opinions!!