GoupchnHigh Voltage Oscilloscope Probe P4100 with Accessory Kit 100MHz 2000V 100:1

Q: hi & thank you. do you know if it is safe to use this on secondary auto ignition?

Are you talking about the spark plug wires? Then probably not. Spark on electronic ignition tends to be 30k-50k volts. High voltage testing is usually done with a capacitive probe or an inductance coil, not a direct connection. This class of probe is suitable for vacuum tube circuits running in the hundreds of volts.