Which statement below is correct?

[BrownTown3]

Which statement below is correct?
◦ Most ignition systems work by switching the negative side of the coil primary windings to ground.
◦ Most ignition systems work by switching the positive side of the coil windings to power.
◦ Most ignition systems work by switching the circuit grounding the ignition coil's secondary windings.
◦ Most ignition systems work by switching the circuit to power the ignition coil's secondary windings.

[lindahyatt42]

Most ignition systems work by switching the negative side of the coil primary windings to ground.

[BrownTown3]

Excellent

[ricroger]

Thanks for the timely response, appreciate it