Left brake light not working

[wskibnt]

This is a great site! I was having problems with my brake lights and turn signals and thought it was in the sockets and cleaned and still no brake lights.Came to this site by chance and read a few posts about my problem and found that my problem was,you guessed it the blinker switch.Pulled off the wheel and cleaned the contacts and now they are all working.I just want to thank all who post on here because without you I was considering a new wireing harness.
I have a 72 C-10 that I like a whole lot and with this site I will be able to get it back into shape
It was the wiggle test and a mirrow that helped me figure it out