4 pt harnesses on their own are illegal in most all states. most likely because most people don't install them properly.
Cars have to be a certain height otherwise they will dive underneather cars in an accident, and you'll be sorry you did.
You should have known you were going to get a ticket for taking the cat out, that's just common sense.
and I can promise you that almost every part you put on and got a ticket for had a "for off-road use only" sticker.