Just completed this project on my Ben343. The bulk head is veneered plywood; there is no wiring in the plywood core. Got to be careful because of what is located on the other side of the bulkhead in the forward berth. Better to lay everything out and measure several times, then drill a small pilot hole to make sure it will work out on both sides of the bulkhead. I opted to do a solid mount without the swing arm. When looking at boats prior to purchasing, I noticed a few that had televisions mounted on swing arms; the bulkheads were moderately damaged from the pounding of the unsecured/inadequately secured TV. Cant imagine it was healthy for the TV either! So, I used a solid low profile mount with 4 barrel type bolts with the flush nuts on the V berth side and one larger hole with a plastic flange/grommet for the power cord, antenna cord, and disc player cable. I had to fabricate a wood spacer and also use right angle adaptors to provide enough space between the bulkhead and the back of the TV to facilitate attachment of the cables to the back of the TV. I also installed another AC outlet in the forward berth for the TV power cord, powered antenna cord, and DVD player. I adjusted the position of the TV so that the hole for the cords ran into one of the V berth cabinets to conceal the installation. The flat antenna & DVD player sit on top the V berth cabinet shelf. I was generally pleased with the outcome. The flat TV antenna is not the best for reception; however, I did not want to run wiring up the mast to a dedicated marine tv antenna. Again, just make sure you measure everything several times and drill that small pilot hole & remeasure. You definitely don't want to drill additional holes in the bulkhead than necessary--mainly for cosmetic concerns.
