Wiring question

[6s1461]

I am putting together a 65 K gt coupe. The reproduction wiring harness has two blue/black stripe wires w eyelets that hang out of the harness. They are located just before the firewall under the dash, where goes to the engine feed. Out of curiosity i found wires on the original harness folded back and buried under the original black tape. I have no idea what they are used for does any body know?