Trail Tech VOYAGER PRO - Tach Sensor; Wheel Sensor; Vehicle Power Help

Tach Sensor
3. The ignition sensor enables the tach bargraph screen and over-RPM
warning lights. The tach signal can pause track recording while the engine is
turned off.
Wheel Sensor
4. The wheel sensor provides slightly more accurate speed and distance than
GPS. The speed signal can pause track recording while no vehicle movement
is sensed (the most accurate method.)
Vehicle Power Help