HOW TO INSTALL THE BIG 3 UPGRADE CAR AUDIO

This is the Grand Marquis build part one, this will be a small 3,000w Setup. Here is a quick How to install the big 3 tutorial. We know most of you guys already have this important step done, but figured we would do a quick and simple tutorial. Previously recorded via Facebook Live at www.Facebook.com/gpcaraudioftw/ Like our page and turn notifications on to see our live broadcasts Customize your big 3 upgrade kit at the link below: http://gpcaraudio.com/gp-no-bs-wiring...