Emergency brake light

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The brake light on the dash between the speedometer and tac has decided to come on. Reservoir is full. Brake pedal good. Is there a sensor on the proportioning valve or maybe a bad switch on the emergency brake handle?   Thanks, Mike

[mfg]

The parking brake switch could be faulty, or out of adjustment… or wire may have bad contact at proportioning valve.

 

Edited May 20 by mfg

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So the light is for the emergency brake and some type of brake malfunction or it could just be a bad connection?

[JimM]

Yes it is for the parking brake only. There is a momentary switch mounted on the parking brake shaft under the dash on my 1975 that may be the problem. Mine was broken and disconnected but after seven years of trying to figure it out, eureka! It finally works.

[mfg]

On 6/22/2026 at 9:44 PM, JimM said:

Yes it is for the parking brake only. There is a momentary switch mounted on the parking brake shaft under the dash on my 1975 that may be the problem. Mine was broken and disconnected but after seven years of trying to figure it out, eureka! It finally works.

Glad it worked out!… Another important function of that same light is to alert driver if one or the other side of the car’s hydraulic brake system has failed.

[Footer]

My brake handle is on the console. I pulled the rear console off to look at the switch. A spring loaded button with a yellow with black wire coming off it. Not sure what makes contact there. Also crawled under and looked at the proportioning valve. Pulled the black and yellow plug off the valve.  It looked clean and I didn’t see any problems. Reservoir is full of fluid and the brakes seem normal.