Brake lights not turning on ! Could be an easy fix ?

Go to mymopar.com and download a free service manual. You may have to settle for Dodge vs Plymouth, etc.

The brake switch feeds TO the turn signal switch when the pedal is pressed. If the TS switch is centered, it routes brake light power to both sides. If you are turning, it routes flasher (not buzzer) power to the side on which you are turning, and routes brake light power to the opposite rear lamp.

Test the brake switch, easy, with either a multimeter or test lamp. Access the connector under the dash on the brake switch, ground your light/ meter, and put the remaining probe on the pink? at the switch. You should have power. Put your probe on the white at the switch. When you press the pedal, you should have power.

Next go access the TS switch connector coming out of the column. You may have to remove the short trim panel under the steering column. Access the white wire on the connector, and again, make certain that with brake pedal pressed, you do have power

If that test is good, and the turn signals work, then you need a new TS switch