To install this texture you have to replace the "jester2.ytd" located in your GTA V game folder with the one I upload.
So run OpenIV and go to \update\x64\dlcpacks\mpchristmas2\dlc.rpf\x64\levels\gta5\vehicles\xmas2vehicles.rpf\ ,
 then click on "Edit Mode" and drag the "jester2.ytd" you downloaded. 

** Be sure to backup the original "jester2.ytd" **!