Originally Posted by dcdunbar
I am considering adding a radar to my GB42 and have seen many of the same vintage with radars mounted to the mast. Upon initial inspection I see no obvious way of running a wire from the base of the mast to above the lower helm. We have already replaced the headliner and do not want to remove it and then drill a ton of holes in the stringers.
On a friend's 42, he brought the wiring along the rails, through the outside of the fibreglass flybridge enclosure, then between the layers to the front, where there was already a teak cover below other wiring penetrations to the space under the upper helm. Once the teak cover was penetrated, looked like it was the right place.
All you need is a cover for your headliner penetration. If you drill it from above first, to locate the hole, drilling from below can then be hidden by a small cover. You might even use the radar headset to hide the hole?