Most of the bulbs on this dash section are the bayonet inserts with either 57 or the newer T10 type, however, my two plug in sockets for R/L turn signals were MIA. So, a simple matter of finding new sockets that measure 5/8....no sweat. Except it is not easy. After several tries, I went with the Geek socket meant for older chryslers.....in the 50's. They could not tell me what size they were, but turns out they are 3/4. So I gave up and took the dash apart and drilled them out to the 3/4 for these new sockets. Also get to clean up the lenses inside, lube the gear drive on the odometer, etc as maintenance. So, not all bad.....forced me to strip it down. And since my speedo works with drill, I was tempted to leave him as was.