yfz3501999

Newbie here although I've had my Banshee for about 6 years now. Here's the problem. I bought a stock 2005 on/off/light switch for my 1999 Banshee off of Ebay last night so I haven't actually recieved it yet. I was under the impression that all the square ones were the same after 1994. Then after I won it, I found out on Yamaha of Troy's site that they have different part numbers and there is a slight price difference. Anybody know if there is a difference or could the same part have multiple part numbers?? Thank you....