1990 Chevy Pickup Extended Cab 350c.i.
My rear break lights will come on sometimes after the truck is parked and
the key is out of the ignition. I've located a switch on the brake pedal
that might be defective. However, I also thought maybe there is not enough
pressure in the brake pedal itself to keep the switch from making contact
and turning on my rear brake lights.
Any ideas how to go about this????
The pressure does not come from the hydraulics. What he means is that the
brake pedal lever pushes against the switch. If you can turn of the lights
off by lifting on the pedal the switch must be too close to the lever.
Otherwise it is probably a defective switch.
Actually you got that backwards. If pulling up on the brake pedal turns the
lights off, the switch is too far from the pedal arm, not to close. It
works the same way the dome light switches on the door jams work, when the
pin coming out of the end of the switch is depressed, it breaks the
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