hi there, I want to mount a light bar to my partners ute as a surprise as he’s always wanted one. Anyways I bought it, but no roof racks due to the apartment we live in the garage isn’t high enough to have one. I have a bar on the back, which I can attach it to. But what part can I buy to attach it? Also what is best to attached the cord along the roof to the engine? See photos attached Thank you in advance.