no it shouldn't I have CDI ignition (Crane Hi6R) in both my trucks.

It fairly straight forward a few subtle differences as noted earier. Silver box is the tccm. I wired the 8625 into my 87 Toyota with a 89 gm harnes and the factory by using the diagrams in the 7427...

there is some good info in here maybe it should be moved out of the introduction area to where others may be looking at it.