Build trailers

[car10002]

Hi

With building trailers in sa is just the following ok or do you need reciepts

1. Get vin number
2. Weigh it
3. Put vin number on plate put plate on trailer
4. Go get id check
5. Register it

Has anyone got 6x4ft and 7x4ft and 12x6 ft and 14x6 ft trailer plans thy can put up

Thanks