Did you change or disconnect any wires? If not, then push your door and hatch switches one at a time to see if you have a bad switch.
If you disconnected any wires in your search for the back-up lite problem, recheck for a loose connection upon reassembly.
I don't know if the back-up lites and courtesy lites are on the same circuit. Those engineers can come up with some doozy circuits.
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'89 LX 5.0 - 5 speed. Original Owner
'94 E-150 4.9 Conversion Van
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