Multiple causes can can cause this issue. See below for possible causes and resolutions.
|Powered to a power bar/strip in cab||To ensure a consistent 12 V power source, it is recommended to route power to the battery|
|Corrosion on battery terminals or loose connection on battery||Clean battery terminals with cleaner, re-tighten connections and check for 12 V DC.|
|Wheelman connector is loose||Check harness to Wheelman connection is tight and secure|