Extra wires and connectors

I bought van listed above 2500 express van and the wiring harness needs replacing. I'm using a 1997 Chevrolet k1500 Silverado 4x4 harness to replace the harness for the express van. I had to re pin the 4 connectors to the PCM just as the original harness that came out of the express van.
I discovered only 2 wires that came from the Silverado, GRY/BLK-D23 and DK GRN-D7. I removed those to wires however, I discovered a female connector with 6 males pins at the end of the harness and I'm guessing it must be for the ABS module. I'm scratching my head because the ABS module was located on the drivers side fender well on the Silverado and the express van is located in front of the gas tank middle way towards the back of the van. I tried researching in google for the wire orientation for the connector and the wires and I'm stumped. After rewording the search engine, I stumbled your website and I thank you for the comprehensive diagrams for the VIN R diagrams however, I don't know if I'm wording the right connector to the firewall, the 6 pin connector orientates to the?Bulkhead connector? Those wires, 6 of them must function inside the cab? PNK, TAN, PPL, BLK, PPL/WHT & TAN/WHT. Also I re pinned the trans connector for the 4l80e and replaced the GRN/BLK and PPL/WHT, B29&B30 with the winding wires instead of the sleeving that orientates to the top of the transmission instead of the plug in on the driver side of the transmission.
I need some help on the 6 pin connector and possibly a diagram and correcting the word of the large connector that's mounted on the firewall with a 7mm bolt that I call a bulkhead connector. Much help is greatly appreciated and thank you for your website that has enchanting my DIY kind of person.