Hey DP...See seems like that is the accessory wires...for the Standard/Tourer. The Interstates appear to have a different color scheme.
For anything electrical related on our bikes, check out Rattlebar's schematics. They are MUCH cleaner and easier to read than the ones in the back on the service manual.
Valkyrie SchematicsSheet S1 shows the Accessory wiring.
Joe