Ok, update on this whole wiring thing, the left rear light was apparently not properly grounded. It has some sort of goofy socket in it that isnt the right one. I managed to "temporarily" ground it. Also took apart all the wiring under the box, and disconnected the trailer harness. All the wiring appeared to be ok. After putting it together, half my problem is now solved...the brakelights both come on, the left light stays on when right signal is selected, also stays on when left signal is selected. Left signal still doesn't blink. Also, if I hold down the brakes so both lights brighten up, right signal works as it should, left one shuts bright brake light off, but tailight filament stays lit. I'm pretty convinced that my problem is in the actual signal mechanism in the steering column. Everyone keeps saying i should put a meter on this, but I don't really know what that would prove. Either the light is on or it isnt. If someone could clarify what exactly i would do with a meter to find the problem, please clarify, it'd be appreciated. I know this seems silly because I'm an electrician by trade, but vehicle electrical has always baffled me for some reason. I do have a multimeter if i need to use it.
