bulbs not working-4kq

[tihol tiholov]

>In recent days the back-up lights, center and rear locking differential
bulbs have stopped working. Bulbs all check out fine as does the fuse.

>Visually I know the diffs are locking. Something loose (other that
what's in my head) in common to these three bulbs?

Based on my 1988 Typ 89, a common thing is the fuse - 5A for center
console and back-up lights.  Recently a fuse re-check fixed similar
condition.

TT