I'll do an page as time permits and I get some better pictures of a nicer switch mod.
Here are some quick shots of what to do:
Disassemble the switch. Just push in the four grey hooks that hold the face to the white back to release.
Then pull the clear plastic piece out
You will need to cut off the top and bottom parts (sorry for some of the blurry pics, I was doing this in a hurry)
I used two coats of primer on the inside , drilled one of the 5/32" holes for a LED, then painted the primer black.
Of course for the finished product I would paint the entire piece to match the dash and cover up the lettering on the front.
Push the LED into place and drill a 5/32" hole in the side of the back for the wires to exit.
Put all the pieces back in place. Push the wires through the hole.
Snap it back together.
I'll get some better photos and do a mod page ASAP.