The way i understand it is that the relay has the hot and the ground connected and when you press the brake the relay works like a toggle and completes the circuit.
brake relay or sensor
tail light bulbs has two filaments inside. One for regular lights and a second for brake lights. One filament is burnt out. Change the bulb.
The brake light switch is located near the top of the brake pedal. When the pedal is depressed the switch is activated and sends current to the brake lights. To access the switch, the under dash panel needs to be removed.
Sounds like water ingress, possibly in the fuse box area.
on the back of the car
The 1996 GMC Yukon brake lights work by receiving power from the brake light relay switch. The brake light relay switch is connected to the brake pedal.
The 1991 Volvo brake light relay switch is located beneath the drivers side dashboard. The brake light relay switch will be above the brake pedal.
There is no brake light relay. There is however a brake light switch located above the brake pedal.
The brake light is controlled by a relay switch. If the relay switch is bad the brake lights will stay on. The brake light switch simply plugs in and out. Unplug the brake light switch until you can replace it.
On the brake pedal.
The brake light switch relay for your 1997 Chevy truck is located beneath the drivers side dashboard. The brake light relay switch will be above the brake pedal.
on the brake pedal lever.
That would be the relay for the "Center High Mount Stop Light", AKA the third brake light.
Have you checked the bulbs themselves? The directional signal should be the same element as the brake light. Check to see if you rear directional signals.
First off the quit making the 780 in 1990. What do you mean brake relay? Brake light relay/integrity sensor? Need more information
The brake lights in your 1983 Nissan pickup truck are controlled by the brake light relay switch. When the brake light relay switch malfunctions the brake lights will stop working.
The 1993 Toyota Camry backup light fuse is part of the brake light relay switch. The brake light relay switch can be found beneath the drivers side dashboard.