Break light

No pedal is not soft. If there was damage to a seal wouldn't there be a leak??

yes...an internal leak....you may note the fluid level has NOT dropped except for pad/shoe wear~

or is squirtin' out the back into the footwell~

have heard of restrictions in the brake lines (like if you ran over a rock, and bent that one) and contaminated fluid causing problems...guess you could take a look see at the switch to see if it has normal operation...or was bent by a toe or degraded plastic and is out of position~...really have nothin' left here...other then the master cylinder and lines leading to and from it...really nothing left...good luck~

yes re-reading you problem...just put the Switch Back where it was~ think you'll be okay then~

I just have the same trouble,just happened this morning, I realized the third brake light was constant on, I check the switch pedal that activates the brake lights, that was the problem came out, I repositioned the switch,problem solved. I hope this helps.