While it is possible to have all three bulbs burned out, that is not very likely. If the center brake light also does not work, the best suspect is the brake light switch. There is also a blue, 15-amp fuse dedicated just for this circuit, so check that first. That is fuse # 23 in the fuse box on the left side of the dash.
https://www.2carpros.com/articles/how-to-check-a-car-fuse
If the fuse is okay, check for 12 volts on the pink/dark blue wire on the brake light switch. If you need help working a test light or digital voltmeter, check out these articles:
https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester
https://www.2carpros.com/articles/how-to-use-a-voltmeter
The voltmeter article shows an auto-ranging voltmeter. If you have one that lets you select the range you want to use, most have a 20-volt DC range which will give the most accuracy. That range will measure any voltage up to 19.99 volts. A few models use a 30-volt range which works the same way. If you select a lower range, the meter will not be damaged, but it will show some type of over-range indication when you try to measure 12 volts.
Getting back to the brake light switch, if you find 12 volts on the pink/dark blue wire, check on the white/tan wire. That one must have 12 volts when the brake pedal is pressed. The switch must be plugged in when doing these tests.
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Wednesday, October 17th, 2018 AT 5:25 PM
