Posted by Phil T on 04/27/23 - 6:43 AM
#2
Pre-2002 there was only basic wiring installed by the factory.
The selling dealer installed any accessories.
The typical setup for almost all boats is a main starting battery, possibly with a battery switch that also feeds a bus bar for accessories. All circuits have a fuse either inline, at the switch or on a fuse block.
A GPS is commonly wired directly to the battery or bus bar with an inline fuse.
Trim tabs can be as well.
The question is, does your current setup allow you to wire to the existing structure or is an upgrade necessary.