tail/ brake/turn socket

I had a similar problem on my 66 because I didn't watch how I put the insert back into position (had it reversed) into the socket. no matter what I did they always had the same filament lighting whether it was tails,stop or turn. drove me crazy until I remembered I had pulled them out to clean them and might have gotten them in wrong. easy to do too and I did it on all 4 of them! I converted it to all tails/stop and turn in the trunk section also on my 66.

that's sounds like what could be my problem. I will check that tomorrow. I understand about the ground deal, but that same filament doing ALL of the tail/brake/ and turn stuff had me baffeled! I have had some people suggest some numbes for new socket replacement but havn't had time to hunt some. I had same problem fgew years ago trying to find sockets that fit a 72 charger, I got close but never found the correct size. I just made them work!