I'll throw in here if you don't mind. Don't confuse brightness with color temperature. I have replaced all lamps on the boat sans engine room with LED. For the three inch recessed lights in the cabin I kept the temperature to no more than 3600 degrees Kelvin and matched the lumens (brightness) to the halogens and for the heads 5000 degrees Kelvin (more towards sunshine). These are the lamps from Marinebeam.com I installed for the living areas https://store.marinebeam.com/9-led-back-pin-g4-smd-power-cluster-novi-bp-g4-09x/
We used the 10-LED version from marinebeam for most replacements; the 12-LED version for over the galley. All the 3000K option. So far, I've found 38 burned-out or missing bulbs, most (except for rope lights) replaced already. I think my total replacement so far us around 63 bulbs.
The only ones that are bordering on slightly too bright are the 6 10-LED G4s over the dinette... although it helps to have the extra light when I'm working on something. I might consider putting a dimmer on that circuit...
Haven't changed anything outside to LEDs yet; just re-used original xenon for the fixtures with burned-out bulbs. On my to-do list.
How many POs does it take to change a lightbulb. I can't yet answer that...
-Chris
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