Brake lights

[w-lewis]

My brake lights don’t work, yet taillights, headlights and turn signals all work. When I upgraded my taillights to LED’s years ago, I replaced the flasher. Could the flasher have gone bad causing the brake lights to go out?

[Snake2998]

The flasher unit is unlikely to affect the brake lights - the most likely problem (if not bad lamps) is a loose connection or earth in the system, check with a voltmeter when brake pedal depressed - if connections are good then the next most likely problem is with the switch which is either mechanical or hydraulic. again check for continuity of circuit when pedal depressed.

[w-lewis]

Where would be the most likely location of the switch?

[Blas]

If it’s only the brake lights no working, look for a switch on the brake pedal arm or a pressure switch on the brake cylinder reservoir. Not knowing what the tail light fixture configuration is or what manufacturer your car is, but it would appear there is ground to the fixture if turn signal and running lights work.
Blas

[w-lewis]

I believe I found it. A fitting screwed into the brass brake line junction block.

[Unique427]

Originally Posted by w-lewis

I believe I found it. A fitting screwed into the brass brake line junction block.

If it looks like this you found it.

https://www.speedwaymotors.com/Brake...SABEgJJhvD_BwE

They do go bad, as in not working, intermittent or you have to
pump the brakes up to make it work. Don't rule out a bad wire.
Sometimes one of the two wires simply pop off the bayonet plug too.

You may or may not have to bleed the brakes after install.

[w-lewis]

That’s it! Thanks. It’s only 24 years old, so it might be time to go bad.