So I have the f115 f116 j112 12v error on my twilight zone, and everything checks out up through the mpu. I've got one solid light, one flashing, and I have 12 volts on tp3 on my power supply. My connector to my opto board is falling apart (the big connector) so I'm guessing that's it? Does anyone happen to know how that is wired or how to re-wire it? The wires on the end fell out and I'm not sure if they were previously a single wire. I bought a new opto board like a moron but it's still not getting power so I'm guessing it's the connectors?
What's the right tool to re-wire my connectors in, and what connectors are there on the opto board? Is there an easy way to concretely determine which connectors are bad going into the opto board? I tried walking through the troubleshooting for the error but it seems like my connectors just fell apart and that would cause this error?
Thanks so much for your help.

Okay, so I'm pretty sure where the wires go but the wiring is definitely messed up somewhere between the boards and I need to fix the connector. What tool do I use to re-insert the wires into my connector? It's the weird one that cuts the wires. Or is there a better more proper way to fix the fact that my old connector fell apart? I think the part that cuts the pvc to connect to the wire ended up cutting my wire in half.