A system, comprising: a plurality of nodes connected in a peer-to-peer network via a communication interface wherein the communication interface in a Controller Area Network, CAN, bus and is associated with a first ground signal, and wherein at least one node of the plurality of nodes comprises: a transceiver ; at least two connectors ; at least one termination resistance module coupled to the transceiver, the at least one termination resistance module providing termination resistance within the node; a first detection circuit coupled to a first connector of the at least two connectors, the first detection circuit configured to generate a change in a first output logic signal when the first connector changes from uncoupled to coupled to the first detection circuit; a second detection circuit coupled to a second connector of the at least two connectors, the second detection circuit configured to generate a change in a second output logic signal when the second connector changes from uncoupled to coupled to the second detection circuit, wherein the first and second detection circuits are configured to detect that the node is coupled to one or more other nodes in the peer-to-peer network, and automatically adjust the termination resistance based on the detecting; the system characterized by a controller coupled to the first and second output logic signals and configured to perform the automatic adjustment of the termination resistance in response to the change in the first and second output logic signals, the controller having a second ground signal, electrically isolated from the first ground signal, wherein the termination resistance module includes a relay coupled to the termination resistance to isolate the termination resistance from the second ground signal. a transceiver ; at least two connectors ; at least one termination resistance module coupled to the transceiver, the at least one termination resistance module providing termination resistance within the node; a first detection circuit coupled to a first connector of the at least two connectors, the first detection circuit configured to generate a change in a first output logic signal when the first connector changes from uncoupled to coupled to the first detection circuit; a second detection circuit coupled to a second connector of the at least two connectors, the second detection circuit configured to generate a change in a second output logic signal when the second connector changes from uncoupled to coupled to the second detection circuit, wherein the first and second detection circuits are configured to detect that the node is coupled to one or more other nodes in the peer-to-peer network, and automatically adjust the termination resistance based on the detecting; the system characterized by a controller coupled to the first and second output logic signals and configured to perform the automatic adjustment of the termination resistance in response to the change in the first and second output logic signals, the controller having a second ground signal, electrically isolated from the first ground signal, wherein the termination resistance module includes a relay coupled to the termination resistance to isolate the termination resistance from the second ground signal. <EOS>