Really sorry for replying you late, cause I was ill and rest in hospital where there is no internet for right ear surgery, and my colleague forget to reply you here, hope you can understand!
The item you bought is just universal 2 din device, it is only support resistance based steering wheel control function to work. And the Fiat 500 car should be original with can bus system and it is can type steering wheel control function. So you may need to buy a can bus interface adapter to support the original car's steering wheel control function my friend.
Best Regards!Statistics: Posted by Andy — Mon Mar 07, 2016 6:49 am
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