BP Power supply

Les mentioned rewiring the 110V transformer on a BP Boss to 55V and
using some capacitors and a bridge rectifier from the control
cabinet to power geckos. It makes sense to me why this would work,
but I need a lot of help with the details of how to do this.
(meaning that I know from the part name what these things do, but I
don't know what they look like, where they are, or how to wire them)
Thanks
Nathan