Hello, I have a bunch of questions. I have a friend with a leisure bay hot tub built in 2000 with a balboa pack. She says it did work and the neighbor says it’s broken and can’t be fixed. Anyway I looked at it and the terminal block is melted on the black and it’s a complete rust bucket inside the pack. On the side of the pack it has three inputs. Ozone, pump and light. Well I unplugged the harness from the pump for whatever reason and when I plugged it back in nothing happened. I plugged it into the ozone harness By accident. which only has 3 wires not 4 I seen a little arc in the harness but the tub turned on and seemed to be working fine. I told the neighbor and he changed his tune and said “oh, well it won’t stay running. It keeps tripping the breaker. “ before I could do more research I noticed a huge leak in the tub. So I repaired the crack and now I’m not sure what I should do. It has a 20Amp breaker in the sub panel and I heard that’s not good. It’s supposed to be a GFCI 50 or 60. Idk I’m not a electrician but I’m handy and eager to learn.