Please help: Winch rocker install

Hey everyone. I just bought my first ATV and chose a 2015 Honda Rancher 420.

I installed a Warn Vantage 2000 winch today, but am stuck on the red wire to the rocker that is supposed to go to the ignition switch. There are zero directions out there on how to do this, so was hoping someone who did this before might be able to help.

I heard that I may not need to splice into the line and that there may be another area by the radiator I can hook it into, but I am lost as I do not know much about this stuff.

Anyone who can help or send instructions or pics on how to get this rolling, it would be greatly appreciated.

Thanks in advance.