12 volt power outlet is not functioning.

F 1 . 39 20amp. location central junction box . under dash panel Right side .

Look in your owners manual for the accessory fuse. That line turns off. Also, consider a 12 volt relay between the seat and your power source. A small toggle switch will work well for a relay.

wire it up to the spare in your fuse box. one side is on only when your ignition is on .fitted with an online switch .to switch on and off.

Replace the receptacle.

I think you need to look inside of the sockets for foreign objects such as change or foil from gum wrappers. This is the most common cause of this problem. If it is all clear we need to unplug both and put in a new fuse, plug in one and then the other, see which one is the bad socket.

it could be the the starter solenoid or starter itself that is the problem.you said it started when you started using your fm transmitter have you tried not using it to see if it starts working correctly for a few days.if it works normally then this is the problem.try another outlet if you have one to see if the problem starts again.

check the accessory fuse, might be labeled as a cigarette lighter or accessory.

im sure of a fuse somewere and its probably a large one.
if the unit shorts it has to have a fuse first thing.
you may find a fuse under the hood in the fuse box.
and then you may find a fuse in the unit itself .
the other thing is to remove it and connect it to another car battery.
if you have a bad unit then a salvage yard in your area should have one.
also test the power in your car going to the unit.if its set to run all the time then theres a fuse at the battery or the fuse box.
one other thing is check for recalls
you may get lucky.

hope this helps
jm

Even thought the plug in is 12 volt. It's ouput is different. Most electronics have different ranges from 3-9 volts.
Does the 12 volt charger put out 12 volts? If so, it would burn up the electronics' capacitors on their power supplies.
How is the car's electronics doing? Are they too failing? If so, that would be a faulty voltage regulator, if not, I would hook up anything you use to the radio wires.
You cannot plug in anything directly to battery no matter what the person told you. Batteries charge, than release charge, a contiuous cycle. The power output is speratic and anything hooked straight up to the battery will need a fuse.

under the hood on the driver side