Where can I find replacement caps for the steering wheel buttons?
 

Hi, I was wondering if anyone knew a model or item name for the plastic caps on a Year 2000 model Ford Ranger.

Sample picture: http://images.gtcarlot.com/pictures/60754513.jpg

basically the the area where the on and off button will be on the left side of the steering wheel has exposed PCB with the tactile switch showing. I would love to be able to get some plastic pieces that go over them, but cant seem to find anything.

It would be good to find a replacement of the entire unit if possible also.