Would be very helpful if you could get a visual of the installation on a nearby 356. Note that the V2/3/4 windlass series are considered “vertical” windlasses even though the motor is mounted horizontally below deck; the gypsy & drum are mounted vertically above deck. When I installed my V2 windlass, Beneteau had actually scribed the drill centerline in the deck mold, for factory installed windlasses, that greatly simplified the positioning of the hole. Also, pay close attention when selecting cable size. When calculating the voltage drop you need to double the length of the distance from the battery buss to the fore peak to determine the correct cable diameter. On my 35’ boat, the combined cable run was approximately 55 feet; I used 2/0 AWG tinned cable (one black/one red) for corrosion resistance as well as cable flexibility, to make the cable instalIation easier. I made up my own cables using a hydraulic crimper and appropriate sized cable terminals & shrink film; however, I learned later from a Mainesail post that you get a much stronger terminal connection with less resistance/voltage drop, using a rotary type crimper($$$). I purchased the cables, terminals, & shrink film online from gregg’s marine wire supply. I found that Lewmar’s installation instructions were confusing and it took a considerable amount of time to figure out the wiring scheme.