Installing led light bar on Silverado

[FENIMACHINE]

I ordered the 300watt 52" led light bar (Eyourlife) and a bracket. But didn't order the wiring. Just want make sure if I doing right to making my own wiring without screwing it up. All I need switch, fuse breaker, terminal connect, wires.. That's all I can think of. What amp maximum should i use? Relay? Anything that will make It working right.

[High Cotton]

This maybe a little late but, would rather take the time to type this than to read your truck burnt. You definitely want to run a relay. The better bars usually draw about 12-15 amps. You can get a 40 amp relay for less than $10. I would try 20 amp fuse. That should be plenty big enough for the bar. Also wire the fuse holder as close to the power source as possible. I would wire it with 10 ga wire using good connectors and shrink wrap. Also I would highly recommend the SoCal Super Truck brackets. They aren't cheap at $160, but are worth it. A buddy runs them. I would have them and a 50" Truxtech bar but I bought a TF2 instead lol.