pb1300

Im trying to install the illuminated door sills, and so far I have gotten to finish up the grounds on the right side of the car, like the directions say. The one area im confused in is connecting the red wires from the voltage regulators to the passenger side. I see where i have to go to connect it to the car wiring itself, but where im stuck as is if I have to connect both red wires from the voltage regulators to the red wire coming from the 12v, or does each red wire from each voltage regulator need to be spliced seperately? Thanks