Having a difficult time replacing the right headlight bulb, headlight has gone dark. My problem is removing the power plug from the old headlight. Service Manual says to remove the plug BUT I can't seem to be able to get the plug off. I can see and feel the plug from underneath the front shroud but no joy as to it's detachment from the back of the headlight. Could use some help here ... older gentleman could use some insight as to what I'm doing wrong! Thanks for any assistance.