Unless the laws have changed, thst type of ticket is legit. NJ inspection is a tough one. Basically, all required lights must work, to pass inspection. But, if there are additional lights on the car, they must work also. That was a problem many years back when high mount stoplights were first introduced. Many folks installed aftermarket lights on thier cars, the bulbs burned out, and they didn't replace them. They then failed inspection, or got tickets, and tried to fight, that since the car is not required to have the light there, that they shouldn't have it pass. They were wrong, and NJ was right.
Don