If your flashers are stuck on, chances are they’re connected to a lamp that is pulsing or strobing more than not. This is common on Stern Spike II games where “flashers” are treated like any other feature lamp. For this, we suggest using the included Stern Shaker Motor Connector harness. You don’t need a physical shaker motor to use this feature, it simply connects into your cabinet driver board at CN16.
For other games, consider connecting to a different flasher that is used less, and make sure you’re not connecting the flasher port to a GI bulb.