rear anti lock and e-brake lights

IIRC, your problem is with the abs system, and not just the parking brake. The electrical connector on the brake master cylinder gets oil on it from a leaking master cylinder cap. I disconnected it, and sprayed electrical contact cleaner on both male, and female connector parts, and made sure I cleaned it up real good with a q-tip , and my light turned off. I also heard of the ABS sensor on top of the housing going bad if it breaks apart inside the diff housing, but mine only has rear abs, and not front. My two cents. I may also have had to bleed the brakes to get rid of it, but can't exactly remember.