I dumped the illumination bulbs and went with these http://tinyurl.com/k8ev5hl
These dim very well where as the single led bulbs didn't
for the other bulbs I got single led bulbs. I got rid of the bulb holders and soldered them in place. Turn signal x2, brake, hi beam. A 68 bulb worked very well also, but I had the led bulbs so I used them (as these do not need to dim)