reverse lights question

so, i posted this in the wrong section…so im reposting, my reverse lights dont work in my S13, all bulbs hooked up and not blown. where would be the best spot to start looking?
Cheers

check the sensors on the transmission. one of the wires could have broken off, i’ve seen it happen a few times.

the tranny has a reverse switch that the harness plugs into… did you check fuses?

was this an auto -. maual swap car?

^if so wiring must be changed; installs; 240sx.org