Systems and methods are provided to connect wireless adapters and field devices for process control systems, such systems and methods include a process control system having a field device, a wireless adapter, a first wire and a second wire. The field device includes a first terminal, a second terminal, a first conduit and a second conduit. The wireless adapter includes a first terminal, a second terminal, a first port and a second port. The first conduit of the field device couples to the second port of the wireless adapter. The first wire passes between the field device and the wireless adapter connecting the first terminal of the field device to the first terminal of the wireless adapter. The second wire passes between the field device and the wireless adapter connecting the second terminal of the field device to the second terminal of the wireless adapter. Other systems and methods are also provided.