1. Go to Kerala Government official website of motor vehicle Department.
2. Check for Information Services on right side Menu
3. Under Information Services check for Vehicles Details Link.
4. Click on that link will open a new window to enter details.
5. Give the vehicle Details you know(registration number, chassis number..etc).
If the data matched then will get all details of ownership and registration.
http://www.keralamvd.gov.in->Information Services menu(right bottom)->Vehicles Details
Give the vehicle registration number and other details