I'm trying to wire an old ballast for a new tank and ran into a problem. It is an accustart triad ballast 2x54w. What happened is that the end of the ballast where the power cord wire are pushed in is not holding the wire. So I took off the small plastic housing and can see that 2 of the connectors are missing the metal spring that holds the wire. It doesn't look like I can replace the connectors. Is this ballast no longer useable? Is it safe to solder the wires directly to the ends and cover them in black tape?

I spread the connectors apart so they are more visible. Next to the orange housing is a small metal spring.