Can the wire be hooked up to the system remote wire?

I have mine hooked up to the switched wire coming from factory, But i heard its better to just connect it to Constant (+)(red wire)

what is the blue wire for?

Connect it to an auxiliary power wire. I hadn't done that, and all I got were a few AM stations. Once I connected the blue wire to a red accessory wire behind my radio, all was well. Do it before you finish installation, and save yourself lots of time!

antenna adapter blue wire can I connectto where

The wire labeled ANTENNA that comes off the back of the stereo. Not every unit will use this wire.

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📡 Upgrade your ride’s sound game—no compromises, just pure connection.

PLUG AND PLAY DESIGN - Fits perfectly into factory plugs for quick, hassle-free installation
LIGHTWEIGHT COMPACT - Slim profile (34.29 x 5.08 x 1.27 cm) ensures easy handling and installation
EFFORTLESS COMPATIBILITY - Directly connects factory antenna to aftermarket radios without modifications
PRESERVE FACTORY QUALITY - Maintains original signal strength and clarity for premium audio experience
OPTIMIZED FOR SELECT MODELS - Specifically engineered for 2007 and newer Infiniti and Nissan vehicles

The Metra Electronics 40-NI12 adapter seamlessly connects factory antenna cables to aftermarket radios in select 2007 and newer Infiniti and Nissan vehicles, ensuring a plug-and-play installation that preserves original signal quality for an enhanced audio experience.

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