Hello,I have a 2004 toyota tundra I wanted to install an aftermarket HU I tried the scosche TA07sr harness but my speakers sounded funny. I noticed the TA07sr manual said to check to see if pin #6 is vacant on the factory plug. Well the one on my tundra is vacant so I guess I have a non digital jbl system. I have now ordered the scosche TA03b as recommended on the manual and I am waiting for it to here. Has anybody had this problem? If you have let me know how it went with the TA03b.