NJ, safety, emmissions, the works. iin NJ, you can't even put the "line of fire" on the back of your truck b\c the law states no more then 3 red lights on the rear of the vehicle. It's overkill here
Edit:
NJ does the ODB2 connection for vehicles 98 and newer. If the ODB connector is broken you automatically fail. And if you fail for emissions you have to go to a state authorized repair facility and bring back documentation verifying what was repaired along with the receipt.