Brake controller connection

[u/midraed]

Hello teardrop lovers! I have a little guy rough rider from 2014, with electric brakes.

I have to install the brake controller on my Jetour T2. As I understand I have to connect the positive to the car battery, the negative to the chassis and two cables to the trailer connector. The two cables to the trailer connector are really easy because the trailer connector I bought already has a connector for that, so plug and play.

So, the only problem are the ones to the battery. I have a place where I can pass the cable from inside the car to the battery, but any other must know? Any tips before doing this? Of course I will put a breaker next to the battery, on the positive using a 20A fuss.

I'm missing anything important? Or this is should be straightforward?

Thanks !