To late the damage is already done. No need for a new thread when there is an exchange of ideas to resolve an issue which took effort on your part concerning a usb port for your car. When you build it they will come, with ideas on how to do it better or easier and cheaper. Nice work though.

 

Hi. Has anyone installed a USB outlet in the trunk inorder to charge devices out of site. I was hoping to find an ignition switched power supply either in the trunk or behind the seats to avoid running a wire from the cigarette lighter or glove box light. Thanks

 

There are battery feeds, several of them, to the central locking pump (all cars), which is in the passenger wheel well (convertibles) or under the floor mat (coupes).
There are also two battery feeds to the power top module (convertibles) in the driver's side rear wheel well.

I know of no ignition switched power in the back of the car.

I've never owned a coupe. Getting to these battery feeds is SIMPLE in a convertible (you just raise the lid and the wiring harnesses are exposed), but I have no idea how to remove the trim of a coupe.
If you want to play around with this, you should download the service manual from our tech area. If you really want ignition switch power (WHY?) it is a simple matter (again, in convertibles) to run a line to the back from the underhood fuse box on the driver's side.

 

Switched and un-switched power is available on the radio connector.


Red and yellow wires, forgot which is which though.

 

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Just remember if you use a battery feed (hot all the time), you run the risk of leaving something plugged-in/energized and killing the battery (if left on). Just saying!


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Thanks for the replies In the end I decided to run a line from the battery with a piggyback fuse which gives me a separate fuse to the device and the ability to easily change from lgnition switched to unstitched by just moving the piggyback fuse location in the fuse box. Thanks again