er3131

I am trying to hook up a PTZ camera to a RS485 connector that hooks into the DVR but I am not sure of somthing. The PTZ has its four wires (red and black for positive and ground) and (yellow and orange T+ and T-) However, I dont know if I am supposed to plug all four into the adaptor or just the T+ and T- and take the positive and the ground to the plug (which was supplied).