I have a 2004 1500 sierra base model and bought a 2002 1500 sierra that is loaded for a parts truck. My question is this, can I swap the interior wiring harness out of the 2002 into my 2004? I ask because the doors from the 02' are in perfect condition and power everything. I have tore the dash apart in the parts truck and have access 95% of the connections, only the firewall connection remains.