Taillight Intermediate Harness Connectors (pictures)

[TheWhiteElephant]

I figured I'd post this here since it is not necessarily an electrical question. Does anyone know if these connectors are available anywhere? They are 4 wire (brown, yellow, light green, dark green) for the intermediate harness that connects from the firewall, runs along the left frame rail, and connects to the tail light harness.

I know the harness with connectors is available for the 67-72 trucks, but they are different. I'm looking for a 1973 model. I believe they are the same up to '87(?). I spliced the connectors into a trailer harness. Should work fine but I've been having taillight issues...

http://67-72chevytrucks.com/vboard/s...d.php?t=436681

I checked for continuity from prong to prong and I'm not getting any on the dark green wire, and my splices seem to be okay, so I'm thinking maybe it's an issue with one of the connectors. I do remember the taillights "wanted" to work when I jiggled the connector at the rear. I did have to splice them that close to the connector because the old wires were toast--one of the PO's spliced/mangled a tow harness in there.

Thanks in advance, and happy new year.