Have running tail lights but no brake lights or turn signals. Front running lights work properly. Puzzled !

 

The tail lights have dual filament bulbs. Low ones for the running lights and high for stop and turn. Possible problems:
Burned out bulbs
Corroded sockets and/or bulbs
Broken wire connection anywhere between dash to lights
Bad switch at brake pedal and bad/missing flasher relay (a coincidence but possible).
I doubt it's a rear ground issue since the running lights work.
Start at the sockets with a test light or meter, with a helper in the cockpit, and see what results you get.

 

Pull up om turn signal handle as weight of handle may disconnect the switch if bushing is worn on turn signal switch.


Turn signl selects power for circuit, ie, STOP, TURN, and Emergency flashers overrule all.
You can turn on emergency flashers and troubleshoot rear lights.