Wiring harness help

[Jim Rowan <jimrowan@uic.edu>]

Help! While in the process of replacing my wiring harness I found 1 wire
that I cannot account for. It is a thick yellow cloth-covered wire that
is in with the assortment of wires that runs to the voltage regulator.
Looking
at the wiring schematic it seems like it runs to the same terminal 
as another yellow wire, this one is PVC covered though. 
Is this correct the correct terminal or am I going to blow up the garage? 

Much thanks!

Jim Rowan
60 Sprite