6 volt, keeping everything as original as possible, including the parking lights up front. It's a 6-wire ribbon, I bought a new replacement from Jim Carter's, I figured for $30 I'd avoid doing things twice at a minimum. White, purple, pink, dark blue, yellow, light blue, exactly the same as what was there. Looking forward to learning, especially why a dual filament is needed in the back but not front, this stuff is just beyond my basic abilities. Thanks.
