You mean trim off one of the 2 tabs(they are at 180 deg. apart)on the sides of the old holder so that it can fit into 1 of the 3 openings in the new units?Is one tab enough to keep them in?Will they fit in well.? I see the old holders screw in differently, but they do have a rubber gasket that will hopefully help seal them.Am I better off filing a new opening in the new unit to accept the 2 tabs on the old bulbholder?
1987 190E 2.3L (Daily Driver)
1985 VW Scirocco (Mint-Summer)