1) Your bronco isn't a factory mass air bronco is it?
2) Word of warning, the ABS unit is the proportioning valve
so if you get rid of the antilocks these can tend to skid the back tires under hard braking. I've never found it to be a real problem. If you unplug the ABS unit it turns an "ABS" light on in the dash. It's pretty easy to pull the whole guage cluster and just pull the bulb out for the ABS indicator. Here's a red neck changing bulbs on his 94 bronco, all you have to do is identify which one is for the ABS and pull it. https://www.youtube.com/watch?v=QEauNss938A
3) I have bypassed the ABS module entirely and pulled the bulb so I don't have any lights on in the dash. I just go buy two short metal brake lines and correct sized flared brake line coupler's from the parts store. I also have a tubing bender that way I can make the lines nice and neat. I prefer to completely remove the ABS unit instead of replacing it. If you feel so inclined you can get an adjustable proportioning valve from summit.