Gyre with wires showing

[Animal-Chin]

Hey all, i have a maxspect gyre and just noticed the black wire that goes into the motor (so yes its under water) seems to have cracked away and i can see red and white wires from inside the casing. I've pulled it out but i'm wondering if anyone has experienced this before? Is it still safe? Thinking maybe the big black wire is more to make it look good insead of the smaller wires that make it run? Anyway just thought i'd put it out there.