Moved to Car Audio.
If I understand your post, you bought just the faceplate from a headunit? Do you have the actual headunit?
Are you aware that the faceplate without the headunit is completely useless?
According to the specs I found, that Clarion headunit has the aux input on the rear. Granted, you're going to need the entire headunit and not just the faceplate.
PLEASE tell us that you didn't purchase a faceplate believing it will give you audio functionality in your ride. PLEASE!!!!