... , Harman,AMG, JP, GARSON, FOX, King Kong and so on. 3. How to Install into the car ? 1 This product should be installed at ... board first. Mark the suitable location for drilling a hole. 3 Drill the hole on the door board with our borer . 4 ... bottom of car door ,then arrange the power cord. 5 Install the nut through the power cord upon the hole inside ...