left rear running light does not work nor the gauge cluster light at the same time?
 

Just the other day i noticed my gauge cluster was not illuminated and so i got out of the car to see what other lights were out. I noticed only my left rear running light was not on either, but my left brake lights do work when pressed. I began troubleshooting by checking all the fuses, the fuses were replaced if bad, but all checked out. Then i replaced the bulbs, and when i tested it again, it were still bad. It did not solve the gauge cluster or the light problem. The electrical connections are in tact but i have no idea where to go from here. Can anyone help me please?