How do you reset the brake warning light?

Scubanme

New member
Hi all,

Recently I had air in the brake lines of my truck because of low brake fluid level. So now that I refilled the master cylinder and did my best to get all the air out of the lines, the brake "warning" light on the dash is still "on". I checked the brake proportioning block and can see that the "warning light" activation pin is still making contact so that the light will remain activated. My question is what do I need to do to get the "trigger pin" to go back to its normal non-warning position?

Thanks for any advice.
 
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