2011 VAUXHALL INSIGNIA RADIO STEREO HEAD UNIT 20983513 *NEEDS CODE
RADIO CD STEREO HEAD UNIT 20983513. 2011 VAUXHALL INSIGNIA Radio/CD/Stereo Head Unit. O/S/F =Off Side FrontO/S/R =Off Side Rear. N/S/F =Near Side FrontN /S/R =Near Side Rear. Near Side - Off Side Explained.