Electrical Engineering *Lighting*

And a wiring diagram, sorry super I missed your previous questions,

Yeah you can reduce the voltage to dull the LEDs Down by using a resistor, but it is a waste of battery power and doesn't alter the colour of the light at all, on my salty beacons I had some modellers paint (it wars 'tamiya') and I used the orange wash on the LEDs face to keep it looking amber all the time, I'm sure you could do this with a yellow wash or similar, although it won't change the led colour,