If I remember correctly, I had no instructions either but all I did was line the guard up where I thought it should go. I think I had to remove a couple plastic plugs or bolts to loosen the plastic and had to also drill a hole. I did have to remove the back tires to have some room to work but just turned the front tires out of the way. The splash guards lined up quite well and look factory installed and are still nice and tight. I did the install in early spring so its too many beer ago to really remember.