96 Sable turn signal bulb replacement

My front dirvers side turn signal has become intermittent. I'm assuming it's the bulb / bulb socket being loose or dirty. I was going to clean them but couldn't see an easy way to get to it. How do I get to the bulb socket to replace the bulb and clean the socket? I see the back of the socket where it goes into the headlight assembly but there is very little room behind it so I couldn't see how to pull it out.

you have to take out the headlight assy