hi bruce,

if you use normal LED`s to replace the lights, you will have to to use some
resistors to limit current of the LED. Flow voltage of LED`s is between 2
and about 4 volts and depends of the colour of the LED`s.
One ebtter way is to use LED`s with a constant current device built in, they
work with 12 V DC. But most of that LED`s don`t give a lot of light...
Best way will be to buy LED headlights, they fit into a normal halogen lamp
housing.
Take a look at the following (german) site to get some impressions:

http://cgi.ebay.de/ws/eBayISAPI.dll?...tegory=30 468

Juergen

"bruce" schrieb im Newsbeitrag
news
hi
a workmate suggested i use LEDs instead of 12v bulbs for lighting on my
28ft yacht. i have house & engine battery and although i live aboard the
cabin lights dont get a lot of use, but nav lights are generally on all
night. has anyone had any experience with replacing conventional lighting
with LEDs? Would i need a step down transformer on the ligting circuits
because the LEDs are generally 4volt?

cheers
bruce