fuel injectors

I bought a used 2010 Ranger 800 EFI HO...Having injector problems and tracking down the injector numbers it appears that 2012 injectors were installed on a 2010 unit.... 2010 calls for pt. # 1202863. The injector wire numbers presently on the engine are pt.#s 1204318 (black) MAG, 1204319 (Gray)...