Yes, my blue wire t's off and goes to blue/yellow wire of ECU. You saying I need to take that blue/yellow and also run to the alt/regulator? I am seriously thinking I am lost...and need to put a new underdash harness in, and take that safer approach...but desperately want to hear this thing run. The car is a 69 Charger R/T SE, and the motor is numbers matching...so I definitely don't want to risk damaging it...