Re: abs / check brakes light
Does your ABS work? Mine was working sporadically and I had the opposite problem ('95 Quigley with 4 wheel ABS). On mine the ABS light was on until I went into 4wd, then it went off in either 4 high or 4 low. In my case, it turned out to be the ECU/valve body for the ABS. I don't know if that helps you at all?
I know the functioning can be checked with the Ford diagnostic socket, whatever it's called, OBD or something? In my case I found the valve unit for about half the Ford factory price online but it does have to be installed by someone with a special tool for setting it up.
If that's what your problem is, the whole repair, ECU and all was about a thousand. I know some folks have just ignored the problem but with a lifted, heavy vehicle I preferred to have a functioning ABS.