ABS code help

Okay, so my ABS quit over a year ago. It started out when my ABS light just turned on for a few minutes after i started the car, and then it would go away after a few minutes, or after I shut it off and turned it on again. But for the last year or so the ABS light is continually on and the ABS doesn't work at all. So today I decided to run codes.

Here's what I got: 25, 32, 44, 78.

25 is one of the input valves I think, which I've heard is pretty much irrepairable...any ideas?

Then I've got two for the LR wheel sensor, and one for the RF wheel sensor. I could probably just trace that back to the coax cable being broken somewhere. But the manual says that any code in the 20s has to be fixed first.

So my question is, where do I go from here??