Short with the 12Volt line coming into the stereo, 2005 Grand Marquis
The factory stereo worked well, but I wanted an after market solution. I
removed the factory stereo, and matched the pigtail of the aftermarket Dual
stereo, color for color, to the adapter pigtail. This worked well for 3 days
until it stopped without any other symptom. I replaced the factory stereo
and now it also does not work. Wiper, windows AC, interior light, and all
other electrical works that I am aware of. I believe that I've replaced all
fuses. I am concerned that I may have shorted the 12V supply with other
wires in the pigtail. Any guidance on how to further trouble shoot this?