Broken Red sounds suspicious! š
The chances of 2 different CDI units having the same fault is astronomical! Iād be looking at the loom and DC from battery to PV.
My early 88 bike had a broken red wire at one of the connector blocks that go to the ignition-key. It was smooshed up and still touching, when I fixed it the power valve properly came to life. I never realised how āslowā it was before. I had no ābenchmarkāā¦
If the PV isnāt moving at all it definitely sounds like a 12V DC issue. Mend that wire! š ā¦
If the horn and indicators work without the engine running the battery & fuse is goodā¦