Those look like aluminum pins on that plug, could be oxidation and just re-seating it clears it up. I had this same issue years ago on the main wiring harness on a dodge truck. Whatever pin it was it was always the same one (happened more than once) b/c it took out the dash cluster (lights and gauges) every time. The solution was unplug harness from the fuse block, blow it out and plug it back in.
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