Car in question is a 1998 Ford F150 with the 4.2L V6 and Automatic Tranny.

While driving,I noticed that the ABS light is constantly on. It came on today. Also, I noticed last week that my brakelights were not working and neither were my turn signals, I dont know if this could somehow be related. Maybe some harness.

I need to throw something else in, 2 weeks ago we upgraded the wheels from 255/70/16 to a set of 295/45/18. I dont know if this could somehow be triggering the ABS light.

Any ideas? Please help