small RGB LED Controler 1, 5V~12V input 2, control 7 ... 1st pcs of pixel lamps, connect the negtive pole wire(R,G,B wire) to controller.3, usually, each 300 pcs RGB ... groups. During this 3, groups, there should not be any wire to be cross connected.4,at the 1st pcs pixel ... lamp of each group, connect the negtive pole wire(white wire) to controller separately.5,usually, each 500 pcs pixel ...