An interface and corresponding method, where {HEAD ~ the interface} is connected via a first connection to a factory data bus of a vehicle which transports signals according to a first data format, and further connected via a second connection to {TAIL ~ a data channel} of the aftermarket component which transports signals according to a second data format 
An interface and corresponding method , where { HEAD ~ the interface } is connected via a first connection to a factory data bus of a vehicle which transports signals according to a first data format , and further connected via a second connection to { TAIL ~ a data channel } of the aftermarket component which transports signals according to a second data format
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH