How much less energy does a LED bulb use compared to a regular bulb given the sam wattage,60%,80% or what.

 

Not sure of the exact numbers (although I'm sure a google search would provide some interesting reading), but it is quite a bit less, and they last quite a bit longer.

 

It's about a few % of the energy for the same light output relative to an incandescent bulb.

 

Its in the milliamp range.

The Good,
-instant on, when compared to a regular bulb you realize how slow they are, really grabs your attention
-low current draw
-not affected by vibration, good for use in dump trucks that shake the elements out of its tail lights when the gate slams closed, we converted all the dumps at work to LEDs and have'nt touched the tailights in two years. I also had a problem with my H&H trailer rattling out its filaments so I converted it over
-much brighter, especially in fog/snow
-less maintaince
-sealed, no corroded bases
-no heat, no melted lenses

The Bad
-expensive, prone to being stolen
-some sytems(like turn signals) require a heavy amp load to activate, LEDS may not provide enough amp draw to activate them
-some are too bright, glare
-no heat...snow and ice will build up on lenses
-needs a minimum voltage to operate so your system needs to be in good condition or they won't work at all
-sometimes hard to find replacments if they die on the road

 

I'd guess an LED bulb would use half as much as its incandescent counterpart. Kinda like a Ram 2500 diesel and a Ram 2500 gas.

 

I can answer that question because I have in my hot little hand, even as we speak, a Lighting users guide by Truck-lite that addresses that very issue. Without a lot of detail I will quote the part that answers the question. Directly from the lighting guide, "A 700% increase in power is required to use incandescent lamps over LEDs."