There are some changes would suggest for that crossover to avoid future problems. Get rid of the yellow twist on connectors. Solder all connections. Same for the push on connectors. Solder to the speaker terminals and input connectors. Hard to tell what wire gauge or type. Would not hurt to go a little bigger, copper conductor.
It appears ACI is not around today. The crossover has the look of several years old, therefore consider some component updates. Get rid of the cement resistors. Replace with better quality, same Watt rating. The caps could be OK if they are a "name" brand. Typically inductors should not all be oriented the same. Upper right and lower left flip up on edge.
Most of all, have fun and enjoy.