I got several complete units your rite heat over time I guess breaks the internal socket assembly. I don't think you want to mess with a bigger bulb as the heat from the bulb may melt the housing.
I have good ones complete with wire cut after the socket.
Mine is complete. I have no use and don't expect to make anything on such a minor item. I responded to your pm/email. Sorry it was a holiday weekend. I just got home late. I got ya covered.
I believe I got what you need. It is just the red lense and is in good shape no damage and the little stem is in place as well. PM me if you haven't found one.