Bluetooth transmitter- any that power off plugged in?

[yellow tang]

I'm pretty happy how my stereo sounds in my 04 but I use a Bluetooth transmitter plugged into cigarette lighter hole behind shifter and listen to pandora off phone. The issue is I'm constantly unplugging transmitter so it don't drain battery as that,s constant 12v even with ignition off. Is their a transmitter that can be left in that might have a on/off button for power? I did notice their is another cigarette lighter hole inside center console compartment but I still need to check if it is constant powered on or not too.

 

[ttocs]

it would not be that hard to wire it up so that the lighter goes to a switched source so it turns off with the key. You would have to cut the wire going to the lighter(your choice) and then run a wire up to the deck area but it would not be that hard if you are not afraid of some colored spaghetti.