Again, know your rights, if your country has them. They cannot do that legally, any decent lawyer would get that thrown out of court, I know mine would. There has to be a basis for them to poke around, buying an LED light off e-Bay would not be one of those. And, even if they did come poking around, where's the warrant is my first question, no warrant, no talk, get the fuck off my property. People would only get busted on something like this if they succumbed to pressure/bull-shit tactics. Hold your rights and you'd have nothing to worry about. Been there done that so I'm speaking from experience. I drive hot sports cars and motorcycles, get followed all the time, and have been pulled over for no reason, if they don't have something solid/concrete to pull me over, all they get is my lawyer's card, I keep some in my glove box and my bike jacket. Don't succumb to bullying and they'll back off, remind them they have to follow the law as much as you do. You don't have to be an asshole about it but if they know you know your rights and won't back off.