When we built the Gr2 Golf rally car, we spread an entire wiring harness out on the floor of the shop, unwound the OEM tape and did exactly what was described - took out all of the wires we didn't need and added extras to the bundle where necessary.

The result was GREAT, in terms of reliability and serviceability but I doubt that we saved all that much weight, particularly on a car that regularly picks up 50# of filth over the course of a day.

You aren't going to like it but writing someone isn't going to change the final answer - it's right there in the GCR. There is no provision to remove stock wiring including - unless someone can point out a clause that I've missed - the wiring to parts that may be removed (e.g., electric sunroof or radio).

Kirk