lol. McLaren.
It's a Mercedes CLK GTR. Anyway, I assume we are talking about that central steering servo sticking up? If so, then yes, the multiplex is exactly what you need. Not sure what that car is myself, either, but looks ok. No doubt someone on here can identify it for you (old FG I think?? Or maybe clone). Anyway, looks like you picked it up for a nice price if it's only the servo that's the problem. Congrats!