Brake warning light still on!

[Jeeptruck]

Changed out master cylinder and my brake light on dash still stays on. I bench bled the snot out of it before install. Bled brakes normal way, gravity bled, cross bled but the dang light is still on. Brakes feel great and stop excellent. Help, spent a fortune on brake fluid and can't take it anymore

[Crazy_Jeepman]

Your proportioning Valve may need to be reset. That is where the switch is for the light on the top of the proportioning valve. So if the light came on due to a line failure or fluid loss the Valve would have tripped and the light come on. Front of valve is a button. Press it in, it would need to be held in I believe. Bleed brakes again. Light should go out ;)

[PhilSine]

This is on your J-10 right?

On my 77, when the brake light is on it means that the emergency brake lever is down enough so that it loses contact with the switch that tells tha light to turn on. If yours is the same then make sure that the e-brake lever is all the way up and if it is, check to make sure the switch is connected and working.

[Crazy_Jeepman]

LOL UH HUH wouldn't that be something :rolleyes: