chris2523
93 Mark VIII
The inverter can be made into a two phase ballast
no. it can not. it is still a single stage ballast. it now simply has 2 trigger wires.
you're simply lighting it two different ways. any perceived difference in light output is probably because it doesn't get enough power from one circuit (running lights), and turning on the 2nd circuit (brake lights) gives it the power needed to operate correctly.
i do not believe using that ballast can give you anything like OEM operation. get a glitch ballast.
if what you described is so easy, why didn't Ford do it that way?