I was changing the brakes on my 2008 Edge and I notice this blue 4pin connector that had a sway bar like connector coming off the frame.  It seems to be parking brake related, but I cannot find anything on it online.  The pic is from the rear passenger side as it is off, but the driver side is connected.  I am in need of some knowledge on what this is and how to correct the issue..  Thank you in Advance