[VintageLambo] 400GT Ignition

I had always thought the two sets of points in the 400"s Marelli distributor were designed for overlap and extended dwell. Since I switched over to a single distributor years ago, I forgot about it. But Aaron got me wondering, so I broke out one of my spare Marellis and hooked up the ohmmeter (see attached).I rotated the shaft and watched the needle on the meter go open and closed and checked the corresponding point on the cap to see what cylinder was served in each case. Turns out Aaron is correct, each set of points handles three cylinders and there is no overlap for increasing dwell. And if you have a dirty or open set of points, you will see degraded performance in the three cylinders served by that set. So I learned something new (after all these years). Gotta love this list. Jack