Injecting a ham

I bought a ham for Sunday, and an injector thingy. I'm wanting to do a maple syrup and ground cloves mixture to inject into the ham prior to baking. I was also thinking of adding yellow mustard, but I can't quite wrap my tongue around how that will taste with the maple and cloves. Obviously, I've never done this before. :0)

Can anyone tell me what ingredients you have injected into a ham and what your thoughts were on the recipe?