The "headlight in fuse" method
I would attach jumper wires to the connectors of a seal beam car headlight. And then attached the other end of the jumper clips to the fuse holder.
The fuse blowing is because there is no load between the power and power. The headlight in fuse handles the load. When the short to ground condition is present. The headlight will light up. The intensity will depend if there are other load devices on that circuit and if they are in the on position
Imagine connecting a wire between your car battery terminals. It will heat up instant. That's a short to ground condition.
But when u attach a test light to the car battery terminals. All is fine The bulb takes up the load.
But with automotives. I'm working with 12volt DC current with a 12v DC sealed beam headlight.
I don't know the voltage or current of a pinball machine