Thanks, sounds interessingThat wire on the headliner is probably for the rearview mirror. The higher trim levels have the temperature and a compass in the rearview mirror. If all the wires are present, you might be able to upgrade yours by getting the rearview mirror and adding the temperature sensor at the front of the truck.
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Here is the plug better to see.
I will check if i found wiring diagrams to this option






























