All of my lights work on my Super Crew except for the left tail lamp. I changed the bulb and switched the right and left sockets. Does anyone know what color wire is for the left tail lamp so that I can test for power?

 

Yesterday I ordered the pigtail connector that plugs into the turn signal switch on the column because some of the wires are pulling out of the connector, giving me turn signal issues when the steering column is down. Would that cause the right tail light to work and the left tail light not to work?