My 95 Tacoma is blowing Tail Light and Brake Light fuses. The tail light is simpler to deal with so I am looking at that.

With the 10A tail light fuse pulled, I have a direct short to ground on the load side under the hood at the fuse box. I'm looking at a wiring diagram online (below) - I
pulled the tail light relay (I guess it is called "integration relay" in the diagram?) and I still have the short. So it seems like I have isolated it to the parking light portion of the circuit? I have physically unplugged and removed both rear light housings from the truck and there is no change. And I do not see anything along the harness that looks suspicious.

My problem is that I don't know if this diagram I'm looking at is reliable - but mainly I don't know where the connectors that are shown are located on the vehicle to help me diagnose.

Do any of you guys have any insights???