I installed new points and got recomendation from Mark to use the points old style for a while before installing the ign module. This to burn the connection points clean from a protective layer.
This is good advice for new breakerpoints. If your points have done some miles already, you can install the transistor ignition module rightaway. You do not necessarily need new points btw.
No meaning to install the ign module when something is wrong. Then fault trace and check if coils are bad.
Right so. This is not so difficult. For a start here is a simple test you can do yourself. Just shove a piece of transparent vinyl tube over both HTleads thus that the ends face eachother (like in the pic below). Mark a minimal distance of 7mm on the outside of the tube and align the ends of the HTleads with those marks. Operate the coil by interrupting the 12V on the primary leads, best done with a condensor connected ofcourse. This is a simple static test to check if the coil is capable to jump a minimal distance of 7mm as Honda prescribes. When in doubt - for instance when 'misses' (is that the correct word?) only occur when coils are warm - you can have them checked at a workshop. They won't charge much. Some make their own testbench.
One thing to replace is the caps.
I even remember socalled 10.000 km servicepacks specially composed for our bikes that had not only 4 new sparkplugs in it but new NGK plugcaps as well.
Arcing between HTleads and or plugcaps and the engine (ground) is often seen on CB500/550 models (maybe the other models too) which will result in misses. This is best seen in the dark. If you listen closeby, you can even hear the cracks. Some spray watermist to detect it. The stock coil HTleads have a thin extra hose around the leads. You can try to clean them with a little bit of alcohol or, when you've removed the caps, replace them. Many OEM coils give the impression HTleads have become loose. They rarely are however and will function OK.
Some mistake a bad condenser for a faulty coil. At the breakerpoints a tiny bit of sparking is normal, excessive sparking is not good and indicates a bad condenser. See
Left condensor (1+4) is bad, right condensor (2+3) is good.
Another thing to be aware of is that the spadeconnectors at the back of the breakerpoints are not intermittently (because of vibrations) grounding. When installing make sure these spade connectors do not touch the baseplate (especially 2+3 can touch easily!).