Running/dash lights runs in one circuit and brakes/turning runs in another circuit. If you have both system lights failed and you are sure ground to tail lights is ok, you are getting two issues at the same time with that.


Check fronts if work to beging the discarding process.

Dash lighting has nothing to do with tail lights But JUST sharing the input source for running lights ( even less with turnings ). That could become in a 3rd issue diff from the other two