@Brissieboy is right - at least in Victoria anyway - any additional reverse lights CANNOT be activated by selecting reverse - nor can the switch to turn them on be accessible from the drivers seat . So be clever / discreet when wiring them up . I got pulled up by the hwy patrol for a random breath test / licence check a little while ago - 1st thing he said as I rolled the window down was “ I’ll have you for those additional reverse lights “ , then I politely told him “ they are not activated by selecting reverse nor is the switch to turn them on accessible from the drivers seat “ , his shoulders dropped slightly then gruffly said “ oh so you know the rules about them then ? “ ....... I then got out & showed him the switch inside the rear barn door that turned them on & he was satisfied- I didn’t show him the 3 way switch up under the dash that can turn them on , have them activated by reverse or off so they’re not activated by reverse. Be clever peoples 😉