If it has the 6-pin receptacle at the trailer hitch, it should be wired all the way up to the front of the coach. Usually zip tied somewhere close to the steering column under the dash.
The brake controller connection can be a pain to find sometimes. Once you find it, you will need the short pigtail that plugs into the brake controller connection. Or you can order a a premade adapter that plugs into the brake controller depending on brand that fits the brake controller harness under the dash.
On edit, welcome to the forum....
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