Access to electrical diagrams?

Howdy, I was wondering if anyone happens to have access to online wiring diagrams. If so, could someone please let me know, as I'm trying to find the diagram for the rear left tail light, specifically the turn signal.

If anyone wants to blindly venture a guess, the truck is blowing out the rear left turn signal bulbs. The front is unaffected, and it's not taking out the fuse, so I'm saying it's a short to power, somewhere near the turn signal itself. However, it isn't taking out the brake light of reverse light, nor is it running back though and taking out the fuse. And it's taking out the bulb as soon immediately once the circuit is turned on, so it's fairly decent amperage, whatever it is.

Damn, should've specified. Issue is with the big block, not Gretchin.

Greetings again, comrades. Today I was tinkering around with the big block (Read: Cursing at the big block) and I found another "interesting" glitch relating to the prior problem. The right taillight recieves a constant ~11.7V at all times (Ignition on, ignition off) through the turn signal power (Doesn't blink, stays on). It loses that voltage if the running lights are turned on, or if the right turn signal is turned on.

Now, sifting through the miscellaneous snippits of diagrams online, and combining this with the previous problem, I'm led to believe the problem is at or near the turn signal switch itself, but before I go tearing my steering column apart, does anyone have any advice or diagrams pointing elsewhere to a fault (A splice after the turn signal, for example)?