Jensen MP1514BT Owner's Manual page 8

6. Mount the sleeve by inserting it into the opening of the dashboard and bend
open the tabs located around the sleeve with a screwdriver. Not all tabs will be
able to make contact, so examine which ones will be most effective. Bending
open the appropriate tabs behind the dashboard to secure the sleeve in place.
(1) Dashboard
7. Reconnect the wire harness and the antenna and be careful not to pinch any
wires or cables.
8. Slide the unit into the sleeve until it locks into place.
8
(2) Tabs