Hey do anyone knows if there a difference between 5.7 engine harness and a 6.1 engine harness.The reason for asking my 2006 300c srt8 gave me a code U1106 and it says lost communication to ecu. Did more research they say may be shortage in harness. Cant find 6.1 nowhere found plenty 5.7 jus want to kno can I use the 5.7 harness