If the BC 30 is installed to display on the navigation device when the vehicle is put into reverse
and is not displaying when the engine is running, turn off the engine but leave the ignition on and
put the vehicle in reverse. If the BC 30 works, then the vehicle may require a relay.
Garmin recommends having the relay professionally installed
If the vehicle is a truck and has a seven pin trailer wiring harness, the BC 30 may be
wired through the harness
The BC 30 may also be wired to a constant 12V power supply
