1950 Chevy 3100. I had to replace the headlamp junction terminals on the inner fenders of my pickup. There was a 3 and a 4 post terminal. Though the catalogs show one each for that pick up, I can't get the 4 post to line up with the old holes. It looks as though the 3 post would fit either side. I checked the wiring diagram and it only shows 3 posts being used on either side. Is it supposed to have a 4 post or a 3 post and if it is a 4 post how is it supposed to fit? The old 4 post was pretty warped but I just thought it was age. Is it supposed to bend to make it fit?