Follow up. I replaced the compass 10/17/20, and it took less than an hour. Easiest $450 I ever made !
1. Compass is located above headliner, left of cargo light at rear of vehicle.
2. With knife or small flat screwdriver, pop lens out of cargo light.
3. Remove two screw from light assembly w/Phillips or 8 mm socket; pull assembly through headliner and let it dangle.
4. With fingers, roll black rubber weatherstrip up to reveal edge of headliner.
5. Headliner is attached to ceiling by two 1/4" plastic fasteners about 6" from each side.
6. Insert 10" flat screwdriver under base of plastic fasteners, rotate screwdriver 1/4 turn to pop fasteners out of holes.
7. Pull headliner down and insert 1-1/2" blocks each side of compass to hold it.
8. With screwdriver, pop plastic fastener out of RH side of compass and remove electrical connector from compass.
9. Use small flat mirror to see screw on LH side and front of compass. Remove screw with 10 mm socket in small 1/4" ratchet, or box wrench would work.
10. Remove and discard old compass, replace with new, in reverse order.
11. Install two !/4' plastic fasteners to hold headliner by just slapping them with palm of hand.
After driving a mile or two, the compass dash indicator stopped blinking and automatically re-calibrated.
Correction to initial message. Installation instructions were only 50 pages instead of 100. Burn them.