
AM/FM bits in my stock main unit stopped working. I found this and it's better than stock. Unfortunately, there are no helpful instructions and everything worked for me, but there was no sound. So if you have a standard system with an amplifier, connect the green AMP/CON wire to the green KEY wire. The sound is great compared to the series. My only complaint at the moment is that the watch only works in 24-hour military time, with no 12-hour setting I can find.

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