Trailer Licence Plate Ontario Do You Need To Have A Permit If You Have Trailer Behind A Truck?

Do you need to have a permit if you have trailer behind a truck? - trailer licence plate ontario

I ask because my father used to start a pick-up in the garden and we had to the dunes, but now we are rid of him, and I bought a Tahoe. You need a permit, a follower who posted it or we can simply turn the plate on the trailer? or do I need to get a permit for the trailer?