I used the 3 mm (same as 5/32) built in resistor type LED from Radio Shack. They were only a few bucks each. They have red, green and amber. They have a Red and Black leads and I wired them directly into the factory harness. I used green for the turn signals, amber for Check eng light and blue (purchased from Dse) for the high beams. If did it over again, use red for the high beam. The blue is blinding, be sure to position the HB indicator off to the side (just not in the center of your view). Hope this helps.
The one you will look for is one that looks like this-
http://www.superbrightleds.com/morei...-12vdc-led/55/