Dash brake light

[MY1978]

Hello, I have a new issue.

My dash brake light is stuck on even while in drive.  I have depressed the emergency brake and released several times but it doesn't go out.  I have checked the fluid level and it is fine.  Every once in a GREAT while, it will go out.  Today I ran a couple of errands and drove for over an hour and the light stayed on.  Any suggestions/thoughts? 

[bd]

Is there any pattern as to when the brake warning lamp extinguishes?  Unplug the tan/wht wire from the brake combination valve to see whether the brake warning lamp goes off and remains off.

[MY1978]

No, no pattern.  I assume the brake combination valve is under the hood?  I will try that tomorrow.

**I found an explanation as to where it is.  I will try that tomorrow**

[bd]

The brake combination valve is a roughly 2.5" x 5" x 1" brass block that has 5 brake lines running to it and a single-pin switch that connects to the tan/wht wire for the brake warning lamp.

[MY1978]

Thank you