Hi, good day friends. I friend recently gave me this set of four of these, which I installed in the four doors so I can open with the key or remote. But the set did not came with no remote, so I can only open the doors by pushing the key to the driver side door. Have anyone use these before and how can I tap into my car harness so I can use my key remote and press to unlock. In stead of pushing in the key all the time. With out using an alarm system installed.my car doesn't hv Central locking its manual.i bent the rods and did everything my self thanks peeps.hv a great day to guys.