I hate this unit. I bought this plus the CNPJVC1 to fit my JVC deck.

First of all it needs to be programmed to the particular head unit. This should be pretty straight forward, but it's far from it. The website which is listed as the site to download drivers no longer exists. So after hours of searching I found the new site voxxintl.com/xmdirect. However, the programming "ONLY" works if Microsoft Explorer is your default browser (My default browser is Firefox) Arrgg!!!! So, from the site I just provided, you must download the software packet. The rest of the programming details are listed on the website.

The connectors are very flimsy, and there is no explanation on how to make the 12V connection. After some research I found that the yellow wire + the inline fuse need to be connected to the 12v constant from the deck. The black wire should be grounded.