Timing Light Issue With Vape - Who Has a Timing Light Brand/Model That Works

[westernco400]

I am trying to confirm my static timing on my 1976 RD400 Clough stage II with Vap and a Zeeltronic but can't get my timing light to come on. It is a newer Innova 5568 and everything I have tried won't allow this unit to pick up the coil wire spark on this CDI type system. I run resistor type B8's and standard coil wires that I can't believe are that insulated.

This newer type unit must not be compatible with a CDI type ignition. Please post what timing light brand/model you have successfully used on the Vape system so I can go and buy one. Going nuts in Colorado!