Cree LED bulb headlight conversion write-up *pics*

put 14V into your old sealed beams and look in wonder at the light they throw. Measure your old harness volts to headlamp with a miltimeter, you are losing >30% of the light output by feeding these 11.5 V dash harness voltage. Install local relays powered by same crappy <12V harness light voltage that taps off 14V alternator voltage.

"....Lighting systems engineering data has it that if we drop the voltage delivered to a light by 10%, then illumination out-put is reduced by over 30%. Going from 14.0 volts down to 11.5 volts is a (voltage) loss of nearly 18%!... "