Hello... We own a 31' 1983 Stinger - "Honey Bee 111" - registered on this site. The winter months offer us the opportunity to rewire and also update the cabin. I am replacing the mast light (dual anchor and nav light) attached to the top of the windshield. The old unit had cracked and melted plastic lenses, but worked well when switched between "front on and both on." My problem is that when I removed the old unit I find four wires: two black, one white and one grey. The new unit has three wires: two black and one red. And yes, it's a true replacement in that it is both a nav and anchor light combination. One last thing - our two batery setup powers the upper set of switches that contain the dual rocker for this light, and I used only that batery to test different combinations of wires - to no result.
Can anyone help me with the correct"original 4 to new three wire setup" for our boat? Many Thanks, Paul and Janine