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