Originally Posted by Cigatoo
My guess would be through the pvc like wire chase under the headliner in the salon. Should be access points under the mast and also forward in the overhead.
What he said. There is a chase down the centerline that exits in the console above the lower helm. From there, mine at least, go to the starboard side and down the removable wood panel on the wall and then forward to the panel. Don't be surprised if there is little to no room to add another cable! I just wired a new air horn compressor to the panel and had to drill a couple of 1/2" holes to get it to lead forward. Chock full of cable and wires. Not sure if this helps but...