Panasonic Strada CN-NVD905U GPS Receiver "cant turn dvd recorder" Questions

...cant use these options? Hi !! If you dont plug park brake and light switch, some options will be blank. Turn off power supply conect those plugs (im advice you to do not conect speed cable). Turn on ...

...cant access these options? Hi !! If you dont plug park brake and light switch, some options will be blank. Turn off power supply conect those plugs (im advice you to do not conect speed cable). Turn ...