'69 K20 harness plugs/pigtails needed

[Christianad1156]

I installed a hitch on my 1969 K20. I need to wire it now. However, I don't want to cut into the harness.

What I'd like to do is make my own pigtails with connectors to put in between the connectors for the body and taillight harness. The connectors I'm talking about are the round ones that plug together at the frame in near the left rear corner. See attached picture of the body harness with one of the connectors (the other would be a female connector on the taillight harness).

I'll connect the trailer wiring to the wires of the extra connectors and keep both the body and taillight harnesses intact.

I drew a picture for what I'm trying to do. Does anybody have some old wiring lying around or know of a supplier for new connectors?

I'm happy to pay for shipping and something fair for the effort.

Thanks!

Christian