Doug, they are different from most i have personally seen.They have metal tabs around the socket that hold it in place when pushed in the marker light housing.They also seem a little larger,not much,but enough to make a different one need to be held in place with some sort of adhesive.I have them on my harness but somewhere along the line the holes were covered/quarter section was replaced so i don't currently use them.
David
http://FirstGenFirebird.org/show/closeup.mv?CarID=571 If i don't get this car back on the road soon i'm gonna go postal! On a quest for FGF knowledge 1968 Pontiac Firebird Convertible 1969 Oldsmobile Cutlass "S" Convertible *Sold*