Stop Lamp Switch (ABS)??

[Grizzly]

2010 Pete 387
Dash throws ABS warning
Park to open what the fault is and it says
Stop lamp switch
However I have brake lights turns and hazards.
Although cruise and the up idle cut out.
1. Is really the switch or something else ABS related?
2 Where is the switch located? (So far I’ve gotten in the dash T’d into
an air line). I’ve read in other places under the cab on the
drivers side.