L298N inputs on pins 3, 5, 6, and 11. Brushless ESC signal on pin 12. Ground connected to the ground on a buck converter, VIN connected to the OUT pin on a buck converter. Buck converter was turning 11.1V into about 8V. My measurement was 8.1 so that's what I put.
I know it's probably too late now but in the future if something like this happens don't move any wires. Just turn off the power and take a close up photo so we can see if anything is miswired.