Hi

I want to install to my car a bluetooth handsfree car phone and I didn't find where to connect it .
I search a volt point that turn off / on with the key switch .

can you guide me how to found it ?

Thanks

Not sure what you mean......What year is your Lucerne?

For example, if you have a 2009-2011 Lucerne, it may have Bluetooth built into the radio.....so all you have to do is "pair" your smartphone to the vehicle....easy peasy, lemon squeasy.......check your owner'* manual for procedure...

Earlier years didn't......your option is to install a radio with built in BlueTooth, or get something like a Garmin GPS with Bluetooth® hands-free calling....in either case, all you have to do is "pair" your smartphone phone to either one....