The " docking lights " Newmar installed on our vintage coaches were poorly located , and in later years were moved back to the area of the rear axle , where they should have been in the first place .
I do my best to avoid arriving at a site where backing in at night is required and can't tell you if mine work at all .
From the lens , I believe they were originally used on a tractor , so maybe ; Tractor Supply would be the place to start looking if you really want to replace them .
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.