Exactly. The coiled Smartcord has an internal ceramic fuse, but the fuse is soldered to the tiny circuit board, is light green in color as I recall, and looks a lot like a resistor.
One simple test to see if the Smartcord itself isn't working due to a blown internal fuse:
If the fuse is good then, regardless of the condition of the radar detector, then either the Smartcord power or alert LED (I can't remember which) will briefly flicker when you plug the Smartcord into the RD. This assumes that the Smartcord is plugged into the cigarette lighter socket and that the cigarette lighter socket is energized with 12V power. If you don't get this flicker under the aforementioned conditions, then I am 99% sure that the ceramic fuse in the coiled Smartcord is blown. The fuse, by the way, is manufactured by Littlefuse corp.
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