Unlike the two standard brake light bulbs, which are generally changed from behind, a 'third' brake light is usually changed from the front. Locate the lens mounting screws and remove them; the bulb should then be revealed.
From inside the trunk.
3rd brake light or rear brake lights?
To change the 3rd brake light on a 1995 Ford Thunderbird, first, open the trunk and locate the access panel or cover behind the brake light assembly. Remove any screws or clips holding the panel in place. Disconnect the wiring harness from the old light bulb, twist the bulb socket counterclockwise to remove it, and then replace the bulb with a new one. Reassemble everything by reversing the steps, ensuring the bulb is securely in place before closing the access panel.
Lexus IS300 3rd brake light is changed from the back seat. Pry the light up and disconnect wiring. Replace bulb and put back together. Easy job
If it is the tail lights, it is the headlight switch. If it is the brake lights, it is probably the brake light switch. I really don't know how to replace the bulb in the 3rd light. change the brake light bulb first it may be shorted causeing the other problem
To change the 3rd brake light bulb on a 2002 Pontiac Grand Am SE, first, open the trunk and locate the plastic cover near the rear window. Remove the cover by unscrewing or unclipping it, then gently pull it away to access the bulb socket. Twist the bulb socket counterclockwise to remove it, replace the old bulb with a new one, and reassemble by reversing the steps. Finally, test the new bulb to ensure it’s functioning properly.
Is the bulb out on the 3rd Brake Light? Check bulb, harness attachment and wiring. Most likely its the bulb. See sources and related links below for bulb information.
It could fit a T10.
Should be able to get to it from the trunk.
2004 Cadillac SRX center high mount stop (third 3rd brake light) light bulb lamp replacement: Purchase the correct replacement center high mount stop (third 3rd brake light) bulb(s) first, before disassembling the vehicle. See sources and related links below for replacement bulb information. Then consult your owner's manual for the center high mount stop (third 3rd brake light) bulb replacement procedure. As simple as it sounds, the owner's manual is the best place to start for bulb replacement instructions and illustrations. If there are multiple bulbs, you may want to consider replacing all at the same time in order to keep brightness and color equal (optional).
Chevrolet Malibu center high mount stop (third 3rd brake light) light bulb lamp replacement procedure: Purchase the correct replacement center high mount stop (third 3rd brake light) bulb(s) first, before disassembling the vehicle. See sources and related links below for replacement bulb information and full light bulb part numbers list. Then consult your owner's manual for the center high mount stop (third 3rd brake light) bulb replacement procedure. As simple as it sounds, the owner's manual is the best place to start for bulb replacement instructions and illustrations. If there are multiple bulbs, you may want to consider replacing all at the same time in order to keep brightness and color equal (optional).
2010 Toyota Tundra center high mount stop (third 3rd brake light) light bulb lamp replacement procedure: Purchase the correct replacement center high mount stop (third 3rd brake light) bulb(s) first, before disassembling the vehicle. See sources and related links below for replacement bulb information and full light bulb part numbers list. Then consult your owner's manual for the center high mount stop (third 3rd brake light) bulb replacement procedure. As simple as it sounds, the owner's manual is the best place to start for bulb replacement instructions and illustrations. If there are multiple bulbs, you may want to consider replacing all at the same time in order to keep brightness and color equal (optional).