This assembly replaced the ignition switch assembly and the mounting bracket. It does away with the butterfly and the black electrical box on the back. The bracket mounts to the frame and the unit plugs into the existing harness. Original switch housings are used. NOTE: The key has to remain in the switch once started. The mounting bracket is modified so that also has to be replaced. If you already have on of our custom brackets, we will take it back for a credit of $35.00. We require your switch housing be returned to us as a core to be modified and reused. The core charge is $150.00. Refunded when core is received.