So I've got the HD Heated Grips on my 04 Road King...they came with it when I got it used.

Over the weekend, I noticed that the end cap on the right side is gone...it probably wasn't on real tight and I didn't notice before it was gone. It's the side that doesn't have the control on it.

However, I'm not sure what I can replace it with. While I'm not a huge fan of these grips, I don't really want to have to replace them right now. But I'm not seeing what I could use to replace the end cap in the time being. I don't see any parts that would just match the end cap like in this set...

Any ideas or directions to look?

Here's the grips:

http://www.harley-davidson.com/store...ted-hand-grips

Thanks.