Infiniti J30 stock stereo security?

[mister-twoster]

Im installing an alpine CDM 7871 into his J30. I got all my wires right, but theres a 2-prong thing that needs to plug-in in order to get the stock stereo to work... im assuming this is a security thing. Since the Alpine head unit doesnt have a spot for this 2-prong connction, the stereo wont turn on. How can i bypass this?

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[KaeZoo 10+ year member]

There's no 2-prong security cable in an Infiniti. What you think is a security cable may be the radio antenna, since Nissan/Infiniti sometimes uses a diversity antenna system. You'll need an antenna adapter to use it with the new head unit. If the head unit doesn't work without that plugged in, it could mean you don't have a ground connection. Nissan often uses the metal brackets to ground the radio, instead of a wire in the harness, so you're not grounded until you screw it back in. An ungrounded head unit will sometimes work when the antenna is plugged in, because the antenna shield is grounded.

 

[mister-twoster]

Ah, thanks! Well try all that stuff when its NOT 2:45 in the morning. Thanks for the detailed reply!

 

[PV Audio 5,000+ posts]

Twoster is one of my good friends, he coulda killed his car (ripped everything out, I was in Antigua), but good to see CA helps friends of friends.