On some models of Ranger, the TrailCore taillights can have issues with the indicator ticking abnormally rapidly in the cab (but flashing on the exterior as normal).
Solution 1: The typical cause of this issue is the resistors in the taillights, in some cases they have not been installed or they are faulty, this means they have to be replaced.
Solution 2: Organize for a sparky to turn off the blown bulb feature. This feature makes the indicators tick quickly in order to indicate to the driver that they have a blown bulb. Sometimes this goes off when the tail lights have been switched from Bulbs to LED's (TrailCore taillights are LED).
Solution 3: Organize for an auto electrician to plug in their vehicle scanners and change the Ranger settings. These are settings specific to the WildTrak and other models of Ranger which affect the indicators (most auto sparks would know what to change, for more precise info contact Aaron.sorensen@utemaster.com).