M_Boats: Wire routing

This is a question for those of you M-17 owners with electrical components mounted to the outside of the cabin bulkhead such as depth sounders, lights for the compass, etc? Where/how did you route your wiring back to the battery compartment under the V berth to keep them out of the way and inconspicuous?? I can't figure out a good way to jump from the interior of the deck to get under the pan. Thanks Joe Seafrog M17