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Anyone know what would cause the 3rd stop light not to function when brakes are applied? left and right stop lamps work fine but the HMSL won't turn on. Could it be a stop light switch?
 

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Mambeau / Admin
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I don't have a 2013 wiring diagram, but ...

If it's wired anything like they were wired up through 2009 the center stop light is grounded at a different ground point from the two other brake lamps.

A bad or broken ground connection would explain it.
 
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