Dodge: 2001 dodge truck, dodge truck, inner frame

Question
drivers side blinker and brake light are out. Unplugged short light assembly harness and used test light grounded to frame, no power for either. And yes, bulbs are good. No power in short harness at light or line where it plugs in in the back.  

Answer
HEY JETHRO,I'M GOING ASSUME THE RIGHT SIDE IS WORKING FINE? YOU MAY HAVE TO PROBE UP THE INNER FRAME AND LOOK FOR A BAD CONNECTION? DOES THIS TRUCK HAVE A TRAILER TOWING PACKAGE ON IT? WHAT IS THE INTEGRITY OF THE WIRE HARNESS? YOU MAY HAVE TO RUN SOME SISTER WIRES TO FIND THIS PROBLEM? I NEED TO KNOW THE MODEL OF YOUR TRUCK,1500,2500,3500? I WILL LOOK UP THE WIRE DIAGRAMS AND HELP YOU TRACK IT.TALK TO YOU SOON,TIM.P.S.WHAT HAPPENS IN THE DASH WHEN YOU TURN THE LEFT SIGNAL ON,DOES THE FRONT BLINK?DOES THE ARROW BLINK IN YOUR DASH OR JUST STAY ON?