That's a tough one because they will fail periodically and it's a part that is specific to that year and model. I have wired in 96 787 grey boxes to these and 97 XP's before because they used ones bring such good money. For a tested one that is known to be good you can contact Westside Powersports. I don't trust some of those ebay guys to be honest or even know exactly what they are selling you.