We installed some after market Halogens we got from Ebay.Had them on m,y 57 and the kids 62 300.They would light up the road.I run a set in my 65 but it just has single light.The others had duals.They pull less than a stock bulb for power.Thought about going LEDs but the cost to how much people drive them at night dosent justify the cost.I hear relays do help also.Oh yeah I run the halogens in my 58 and 74 Harleys also.They use the upgrde 55/100 watt bulbs and even with a generator on my 58 no problems.Rocky