New battery installed, now no power to anything

I just bought a used 2009 Polaris Sportsman XP and found that when it gets under about 20 degrees it would not start. Just a click and then a noise that sounds like a pump then nothing. I replaced the battery and now I have real problems. I have no lights and nothing on the display nor the horn, just simply no power whatsoever. If I try the winch, I do get a click out of its solenoid but nothing else. I am pretty sure I got the wires hooked up correctly, the were 3 on the positive side tied together with a zip tie and 2 on the negative, one going to a bolt under the seat and the other headed towards the rear where I hear the clicking from the winch. I have no clue what to even begin looking for outside of the logical which is the battery. I tested it at 12.34 volts and even threw a charge on it just to be safe, no go. Even if the battery were bad I would imagine I’d at least get lights.

I have not had a chance to check fuses yet. Does a fuse sound like a potential candidate? Anything else that could cause total power failure while operating the winch will make the solenoid click (clicks once then won’t click again for 2-3 seconds but is consistent).

Another thought I had is maybe I tweaked the main positive cable too much and damaged it?

Thanks everyone.