Hardwire Bluetooth Module

[Anonymous]

Quick question for people.

I've got a Bluetooth device which plugs into the aux socket and cigarette lighter. If I wanted to hardware the power, is there a way to do this. (thinking behind the panel under the stereo) without the risk of a flat battery I.e. hardwire it to a source which switches on and off with the ignition?

 

[markplant]

You can get a piggy back fuse an just find a ignition only fuse in the the box

 

[markplant]

Similar to this
http://www.ebay.co.uk/itm/ADD-A-CIRCUIT-FUSE-PIGGY-BACK-TAP-STANDARD-FUSE-HOLDER-ATO-ATC-12v-24v-VOLT-/251935755184?hash=item3aa88a8bb0:g:NAEAAOSwV0RXvHYU

 

[markplant]

List of fuses
https://www.bmwcca.org/forum/index.php?attachments/2004-bmw-z4-e85-color-fuse-diagram-png.355/

 

[Anonymous]

Thanks for the replies, with a piggyback fuse how do I ensure the wires to the Bluetooth module are correctly grounded?

 

[markplant]

I used one of the screw or bolt fixings by the fuse box