headlight issue after upgrade......

OK, so last January, I purchase some upgraded headlight lamps from Bluhm Enterprises, for my 2000 800 RMK and 2001 700 RMK, which was upgraded the center lamp with a H4 100/90watt and 2 886 50watt lamps. On our first trip out this year, the low beam lamp did not work, on the 700, and one of the 886 lamps on the 800 didn't work. On the 2nd trip out, the 700 lost all the lamps. Then this weekend, I removed the new upgraded lamps, and put in the old lamps on the 700, and they seem to be fine for the ride. I will check them again this week, but was wondering if this is a voltage regulator problem on the 700 or just bulbs not lasting or can't handle the vibration of the ride? Maybe the wattage is too high for the sleds?

Any thoughts would be greatly appreciated on what could be the issue with these older sleds

headlight issue after upgrade......