I bought a LED taillight bulb that just pops in the stock location for my Multi. I bought the exact same item for my 900SS and it worked great. It's the kind that rotates around when you are driving and then flashes when you hit the brake. Works great on my 900. On the Multi it doesn't work so great. The rotating part doesn't work. Only one or two LEDs light up and sort of flicker when you ride but they all come on perfect and pulse when the brake is applied. Why is that? Is it just the differences in electronics on a 2005 Multi vs. a 1995 900SS? Same bulb but it doesn't work right on the Multi. Does it need a resister of some kind? I didn't need that on the 900, just pop in and go. Thanks for your feedback.