This kit is for use on the early Bachmann class 37 which has the 8 pin decoder socket. The board and wiring replaces the existing 'forward only lights' which came with the model from factory and gives you full forward and rear lights without the need to drill any holes.
Kit Includes both replacement PCB's for each end.
1 Kit required per loco
It requires basic Soldering skill and full instructions are included in the kit.