I replaced my old instrument kit (a combo depth, speed and temp sensor through-hull and single cockpit display unit with Raymarine combo through-hull and mast top wind transducers to two cockpit pod displays at the helm.
I followed the original cabling pathway and routed the through-hull and through-mast wind transducer cables through the bilge, past the engine and up into the starboard cockpit locker to the bulkhead. This is where my old system was located (top right of bulkhead, just below the gap between the inner head liner and outer deck). Power ran to the panel through the gap between the head liner and outer deck, through the upper slider cabinet in the head. The instrument display was mounted in the cockpit, on the coaming (?) to the left of the cockpit locker and fed from the bulkhead through a gap between inner liner and exterior coaming.
I am a lake, mostly day-sailor, and opted to install the two instruments I had in pods at the helm. I ran the feeds up through the pedestal guard to the pods. Also, I really wanted to get things off the coamings as these make ideal backrests for those looking for a comfy (or safe) spot to lounge.
But… I have also run wires up through the shelves to the left of the ice box to lead wires to the electrical panel. This was when I replaced the in-mast power to the deck/steaming and anchor lights. I didn’t have the length of wire to go through the bilge, past the engine, up through the locker and overhead into the panel. Also, the new wires were much thicker than the old wires and couldn’t be pulled through where the old wires led. So, I drilled a new route.
Finally, just in case you are tempted, O’Day ran the bulk of my 302’s electrical into and under the bottom shelf of the sink cabinet in the head, and then up through a conduit in the head, to the right of the icebox, and into the panel at the Nav station (when you are looking at the Nav station, to the shelf at the back, on the right is a teak box that hides the bulk of the boat’s electrical wires going into the panel. It may be possible to fish a wire through one of the holes around where the corrugated tube for the VHF coax goes under the icebox, over and into the space under the bottom shelf in the head, and up through the conduit and into the panel. This was one of my most frustrating efforts to get a wire into the panel. If fishing a line under the icebox and around and over hoses into the head was a trick, pulling wire through the wire-packed conduit into the panel was insane. But, I don’t think you would want to run transducer cables so close and in contact with electrical wires.
Hope this is of some help.
