If you have an amplifier than you wire that blue wire directly to the amp turn on wire. If not, just cover it with tape and don't use it. It's not necessary.
Ive been following this thread on NB:
but my Pioneer stereo harness doesnt have either of the wires shown in picture #4 in the link above...
So what do i wire the blue antenna wire to? if anything? Its marked "DC" on the end.
The Metra harness came with 2 blue wires NOT plugged into the harness plastic. One is solid blue and marked "POWER ANTENNA". The other is blue with a white stripe and marked "AMP TURN ON 12v+".
Im assuming the one i need is the solid blue line...but per Metra's included instructions it states "FOR 1998-UP MODELS - Do NOT use (or tap into) the Blue or Blue/White wires for these applications."
I am confused.?