So exactly what problem do you see with the timing lights that indicate they are not compatible with the multi-spark? Wouldn't they trigger on the 1st spark? And if I recall, they are single spark after 3000 rpm.

Thanks

66 Belvedere Vert, 4 Speed/Jerico, slowly, very slowly, getting faster - NA LD Wedge
New New Best: 10.56 @129
68 B'cuda 4 gear Jerico - Another New Best of 9.86 & Trying to slow up
https://www.youtube.com/watch?v=T4jDLKwd9Gs