Should be a Carefree Marquee OTD unit. It has a tubular motor that comes out the left end. Here this should help you.
Not too difficult. You most likely have the 2 slot motor, use the instructions for the 1531 Kit. Easy to replace, but order the kit before taking apart if possible. Be sure to follow the instructions. Best to have a helper. Once the awning is open after the motor is loose, remove the 3 screws that attach the awning to the side and slide it forward, the wires are inside the caulked hole. Just disconnect and completely remove the awning for the easiest job. Be sure to reajust the stops before using.
Let me know if you need more info.