ok i took apart the cap i had and took the voltage meter and hooked it up in the dash. i calibrated it with a multimeter on the batt with the engine idling. so they were within .1 volts of each other. i double and triple checked them. ok now the vid...... ok its backwards cause its a mac vid. i dont know.
car was warmed up so the voltage was lower than the one above.(cold engine). when its at running temp it runs at 13.9~7
i also rechecked it the other day. still within .1 volts of each other. when i have time and a lil more money i want one at the amp.