Working on my 74 2 door with manual brakes.  Master had air in the front chamber (rear brakes), and obviously the brake light was on.

Added fluid, bled brakes.  Now I have all the brake pedal in the world.....but the brake light is on.

Now the parking brake does work, but the light stays on if the e-brake is on or off.

Is there a reset on the proprtioning valve?  Is there something I am missing??

Could be the e brake switch is stuck on also, check it

I think there is a button or pin on these proportioning valves that has to be pushed to reset the bypass.(everything is at the shop. can't go check for ya)   some of them i think you had to hold the pin out and bleed the rears then do the fronts to get it to reset properly.  hope one of these sets you on the right path

OhSix'

Havent had a chance to get to looking into it yet.....been  "busy".....lol

The e-brake works good.  Also, I did get the rear brakes to bleed, so the PV is allowing fluid to pass (ie, it thinks the system is fully functional).  I have GREAT rear brakes too - it'll lock the rears up on dry ashphalt.

Going to look into the park-brake switch.  If not, I guess its a new PV for me!

I had thought about the button on the PV, but (if I recall correct) wasn't that a GM reset button they used to use in the 80's?  Couldn't recall though...


Thanx all for the input!