Pretzer46 I think they want you to think you have to put in a whole mast bearing and wire to service your horn. I've soldered a new wire to the insulated housing and fished it in there,if you have a wire don't let it get away either use it,or fish a fresh one in there . I think it will work so you can use the later wheel. Just cut a junk shaft from a 46 car to use to mount a 53 wheel on for restoration work on my trucks.