Looking more closely at the diagrams and starting to understand them better, I see that the red/green stripe wire goes to one side of a 14A fuse, #16B or16A. The other side of that fuse is the red/yellow hash #640.
My question now is; if one powers a PII with this wire as suggested and the fuse blows, (one is stuck on the side of the road if no spare available or the driver is unaware of this fuse) is there a better option wire that is NOT fused, but still a full 12V in the RUN position?
Am I making this way too complicated?