The interface receives {HEAD ~ digital signals} from {TAIL ~ the aftermarket component} via the second connection, the digital signals being in the second data format which corresponds to the aftermarket component 
from
The interface receives { HEAD ~ digital signals } from { TAIL ~ the aftermarket component } via the second connection , the digital signals being in the second data format which corresponds to the aftermarket component
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD 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