Hello, I'm Danny.
It sounds like you might be having one or two different issues with the reverse lights. The neutral safety switch controls the reverse light circuit. Here is a tutorial showing how to test electrical wiring:
I've attached a picture below of the neutral safety switch location on the transmission and the wiring diagram below of the reverse light circuit for your car. As far as the wiring I would test to see if you have a good ground to start. Hope this helps and thanks for using 2CarPros.
Images (Click to enlarge)
Friday, January 29th, 2021 AT 11:59 PM