Are you talking about the electrical socket the bulb plugs into or something that is actually part of the housing? If a piece of the housing is broke you are most likely stuck with getting the whole thing. You might be able to find a wrecked one and scavenge what you need. If it is just the socket mrmopar may be able to help you out, checking for part outs in the marketplace may work as well. Supplying a picture or part number would be helpful to identify exactly what you need.