Allis-Chalmers offered an optional rear auxilary socket in order to put power at the back of the Tractor for attachments or extra lighting. The CA, WD45 & Industrial B were three of the model Tractors that commonly came with this option. Over the years. these sockets would get damaged or torn off never to be put back on. Here at B&B, we have a reproduction of that same socket assy that came on the back of these Tractors. This is a direct replacement part. Complete with flip up door just like the original came. Comes with male plug to wire to aux. lights or impliments.  Another B&B original!