Found some great tips in this guide I found a few years ago on testing\diagnosing\troubleshooting PVL ignitions on two stroke engines… It shows the various expected resistance values for different PVL ignition systems.
The most common one in karting is the 105 458
PVL_Ignition_Troubleshooting.pdf (215.8 KB)
Also very useful is this PDF on PVL ignition system installation:
Montageanleitung_komplett_endlisch.pdf (253.1 KB)