Well let's try and isolate this down. The coil worked fine before, so that's likely good. Did you have the game off when changing lights? I'm not familiar with that fuse block so you may need to provide a link to the info for use to see if that could be related.

Does it try to fire the coil at all? Or does nothing at all happen?

If you haven't already, pull the fuse associated with the coil and test it with a meter to make sure it's good. It's possible the coil shorted to something and blew a fuse.

Have you tested to see if you are getting voltage at the coil?

How about resistance to see if the coil itself happens to be bad? You can use the chart below or just compare readings to a known good one on another set of targets.

https://flippers.com/coil-resistance.html

No problem. You are on the right track and we will get this sorted. To measure the resistance on the coil set the meter or ohms and just measure across the lugs of the coil with the game off. Compare the measurements to a known good coil of the same type, so another drop target bank.

To measure voltage, you want the game on (be careful) and the red lead of your meter (set to DC volts) on a coil lug and the black lead to ground, I usually just grab the ground strap in the cabinet.

Let us know what you get and we will go from there.