Something to consider on LEDs before you put them in.
Regular incandescent lamps have pretty much one failure mode - OPEN. When a lightbulb fails open, current drops to zero.
On occassion, an incandescent lamp can break a filament and re-weld itself with a shorter filament, where it draws more current / burns brighter.
LEDs have two failure modes.
OPEN - Same as an incandescent lamp.
SHORT - Not the same. This is a hard short in your lighting circuit. It can cause damage to wires and blow traces off your lamp driver board.
Why does this happen? Because LEDs are DC devices. Even the small lamps have a tiny rectifier in the base, to transform AC to DC. The device that fails is the rectifier.
Why it is important: Pinball machines were designed with incandescent lamps. If they were designed for LEDs, they'd use a Crowbar circuit or a current limiting device (fuse, electronic circuit breaker) to avoid damaging the board or letting the smoke out of the wires. The problem is that they don't for the most part, apart from the main fuse for the entire lighting load.
I have personally seen traces blown off non-arcade electronic boards by this issue. We replaced the incandescent lamps with LEDs, then all the lights went out. We had the LEDs analyzed, and this above information is what we found.
Be careful. The problem is simple: you don't know how good the products are that you are getting (for LED light bulbs). If you get a bad one, it can damage your arcade game.
On the other hand, you can argue that since plenty of people have put in LEDs at this time, that the fuse is good enough, since nobody has (to the best of my knowledge) posted horrific pictures of shorted wires or traces blown off a board after installing LEDs.
Another way to reduce damage is to put a current meter on the lead for the lighting bus, see what the current is, double it for margin, and replace the fuse with a smaller size (approximately double the current). That would at least reduce your potential exposure to damage.
Good luck.