inputs.text: works great half price similiar ones - not plug play type unit not think average person would able get running units problehems one cable connections exact mated perfectly itehems purchased hong kong no installation directions user manual gave visual instructions got running problehems one wires required unit operate not receiving 12 vdc run 12 vdc jumper cddvds would not work rehemove two screws top unit nowhere say rehemove screws prior installation gps worked great week files sd card became corrupted follow foreign language links obtain map program reinstall thehem sd card reformat still issue backup camera progress work installation problehem mounting hardware not match make brackets hold unit unit fit perfectly spot needed hardware would not let attach despite short comings give thehem 5 star rating support awesome responded immediately queries able get systehem running works great picture awesome lot trouble getting running constantly taking dash saving 400 made effort worth