Whatelse can I do? Reverse lights don't work with a new switch and fuses work? on 1998 Chevrolet S10

New switch and fuses all good but reverse light still don't work.

Asked by for the 1998 Chevrolet S10
2 answers
could be a bad connection at the automatic transmission servo. park/neutral switch or switch could be bad or bad out of box
check bulbs and sockets for power and ground