Hello. I'm new to the forum, and I joined after looking for information on the (now) infamous license plate lamps (LEDs) that only come with the rear hatch assembly on the 2012 Fiat 500.
I took my girlfriend's Fiat 500 to the dealership in NYC last month and was told exactly that: the whole assembly was $150+ tax without installation. At first I tried an aftermarket LED license plate fixture by Pilot, but only two of the 12 LEDs on it would light, so I searched on the forum some more, wondering if I needed a resistor, or something (and found someone had used a 10ohm, 50W resistor elsewhere when replacing LED).
I'm not electrically savvy AT ALL. Just a shade-tree mechanic.
My friend found this page which answered a lot of questions:
http://www.fiat500usa.com/2014/09/fiat-500-license-plate-bulb-change.html
Apparently the ridiculous design was revised in March of 2012 to where you could replace the individual LEDs:
Fiat 500 License Plate Bulb Part Number
Right 68212034AA
Left 68212035AA
My current plan is circumvent whatever the issue is with the LED License Plate Lights I purchased, and buy those, and cut/solder the wires, because her Jan 2012 has the old non-replaceable bulb assembly, but the Jan 2012 and the March 2012 Fiat 500's presumably have the same wiring, etc, so the LEDs should be interchangeable.
Any input is welcome!