OK, I'm missing something. Isn't that the wiring associated with the timing delay relay? Where you turn the key off & the lights stay on for a little bit?

70 Roadrunner convt. street car 440+6, NOS, 4-spd, SS springs '96 Mustang GT convt. street car '04 4.6 SOHC, NOS, auto, lowered "Officer, that button is for short on-ramps"