so what could cause my brake light to be on at all times?

 

Pessure Differential Switch? If so, it's alerting you to a leak in one of the brake circuits. Didn't you have a rotted rear line a while back?

http://auto.howstuffworks.com/auto-p...ter-brake2.htm

JamesC

 

low brake fluid? leaky wheel cylinder?


check your master cylinder, if the back reservoir is low, pull the brake drums and look for fluid

 

e-brake switch is shorted out.

put the car in run but don't start it and put the e-brake down and see if the light goes out.

 

yes i had a broken line running up into the rear drivers side wheel up into a flex hose. i fixed that but the light is still on

 

Did you reset the light?

From the manual:

The pressure differential warning switch is designed to constantly compare front and rear brake pressure from the master cylinder and energize the warning light on the dash in the event of a front or rear system failure. The valve and switch are so designed that the switch will latch in the "warning" position once a failure has occurred. The only way the light can be turned off is to repair the failure and apply a pedal force to develop approximately 450 psi line pressure.

JamesC

 

I had the same problem recently. Went to Advance Auto and purchased a new brake light switch ($10), 10 minutes later it was fixed.

 

where is the switch?

 

It is located just above the brake pedal.

 

I was gonna say the same thing as it doesnt take much to break the switch