All the LED's I have purchased are 12v plug & play. There are other components mounted to the strips/G4 lights that are probably resistors?
The first LED's I purchased were from superbrightled.com. They were 3 x 1 meter,180 LED's with 4 connectors for $80. I mounted them in the ps cove. 0.6 amps vs 9.0 amps for the old fl on both sides.
The next purchases was from sirs-e.com. They were 1 x 5 meter, 300 LED's for $32. I mounted this on the ds cove. 1.2 amps. I also used these same LEDs in the ceiling fixtures in the bedroom. Original fl's used 1.3 amps, LEDs .6.
Clearly the LEDs from superbrightleds.com use far less power, but are +/- 4 x more expensive. They also appear brighter, than the ones from sirs-e.com that have a blue tint.
I might have been better off to get the white, instead of cool white for more light & less blue, 1300 color temp vs 3000 color temp
On the front down lights, I changed the fixtures some time ago as the original protruded up into the cove area. When I add the A/C ducts in the cove area, I needed the room the original fixtures were using.
My original purchase of the G4 LEDs was from ledtrailerlights.com. They were $50 for 3. They worked great, but very expensive. I found the same G4 led from xespiderx for $3.69.
They physically look a little different than the first ones, but work great & appear to have the same light output. 1 Halogen G4 bulb uses .9 amps; ALL 8 OF THE LEDS USED A TOTAL OF 1 AMP!!!!!!!!!!
I'm no pro on lighting & I'm not sure these will never pay for themselves, but they should last a lot longer on battery's when not plugged in to ac.
http://www.superbrightleds.com/cgi-b...-flexible.html
http://www.sirs-e.com/st/3528-cold-w...ac9c8c8ffc7b38
http://ledtrailerlights.com/rv/RV-G4-led.htm
http://cgi.ebay.com/MR11-G4-Warm-Whi...item2eb271d087
Got to find another project, it just started snowing again.