I have a 2006 dodge ram 1500 5.7, my left rear blinker went out and I have tried replacing the bulb and the turn signal sensor neither of which have worked. The running brake lights work for it but just won’t blink when I turn left, the left blinker on the dash also blinks fast. I have ran a voltmeter on it and it didn’t seem like it was getting pulsing voltage when I attached it but I am newer to using one so I might have done it wrong. Any suggestions?