Brake light on all the time?
 

1994 cherokee country. Monday my break light turned on and has not shut off. Parking brake is not on. Have not found any leaks. Just replaced master cylinder today and it is still on. Blead the lines. I also tested to see if my break booster was bad but I do not hear any vacuums leaks and it responds correctly to the 3 pump test while off. Im confused what else there is to do.

How does the brake pedal feel? Low and soft, or high and firm?

The pedle feels low and soft

Brake warning light?

Yes. The one on the dash.

Bleed the whole system and make sure the rear brakes are adjusted correctly.

Bleed the master cylinder ... I've seen so many people struggle with this and they'll bleed the system til they pull all their hair out .. Bleed the MC. Air pockets will get trapped and they have a longgg way to go from there. Start at the MC and keep it topped off when bleeding!