No spark at distributor

[cp5491r]

I am frustrated on this one. With switch off, I have voltage from starter to both sides of coil. Ampmeter discharges when I try the horn. Took distributor plates (top and bottom) out to look for shorts and didn't see any issues. Replaced the wire from switch to distributor, thinking it might of been shorted out inside the cable, still no spark at the points.
What am I missing?? Thanks.