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1. Check that the brake light fuses (as well as all the others) have a good connection and are free of corrosion. Think about purchasing replacement glass fuses designed to be used in holders like Volvo uses.
2. Determine if you are getting 12v in the wire that supplies the brakelights. Use a test light with a sharpened point and probe for a wire that shows power only when the pedal is pressed.
3. If you do not have 12v in the wire work your way forward. Go to the brake light switch. It is high up on the pedal mechanism. You will need to remove the knee bolster, push the seat back and put your body in a painful position. Check for 12v at the switch on the supply side before pedal is pressed and on both sides after.
4. If all the brake lights quit working all at once (which you would not know)the round red bulb out relay could be bad. They can usually be resoldered after removing the cover and examining the solder joints to find the bad one or simply resolder all of them. You can usually fine the bad joint in strong light with a magnifying glass.
5. If the wire is powered and the lights are not working you need to clean the contacts that connect the wires to the board as well as the contacts for the bulb holders in each case. A clean pencil eraser is good for the bulb holder contacts on the board. Clean things up and wiggle to see where the problem is.
Good luck and let us know what you find
Randy
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