Unsure if this is the correct forums but here goes:
I am currently wiring in a generic 12v Bluetooth Apt-X audio streaming circuit board into my car's AUX IN feed.
I've cut the aux cable (3 wires - ground, left and right) which feeds the female aux socket and plan to put a very basic switch in there so I can choose the input from the existing aux socket, or from the bluetooth board.
My extremely naive question is... I've got a switch that can switch 2 wires (DPDT toggle - aka http://goo.gl/LtXJcR). Is it enough to just switch the left/right aux wires, or do I need to also switch the ground wire? If so, this means I cannot use my existing switch.
I assumed that ground would be safe to leave connected to both inputs permanently but perhaps not?
The reason I'm switching in the first place is I don't want an iPod or anything that's connected externally to be interfering with the bluetooth module output should they both be on at the same time for any reason (and want to avoid creating my own mixer)
I am currently wiring in a generic 12v Bluetooth Apt-X audio streaming circuit board into my car's AUX IN feed.
I've cut the aux cable (3 wires - ground, left and right) which feeds the female aux socket and plan to put a very basic switch in there so I can choose the input from the existing aux socket, or from the bluetooth board.
My extremely naive question is... I've got a switch that can switch 2 wires (DPDT toggle - aka http://goo.gl/LtXJcR). Is it enough to just switch the left/right aux wires, or do I need to also switch the ground wire? If so, this means I cannot use my existing switch.
I assumed that ground would be safe to leave connected to both inputs permanently but perhaps not?
The reason I'm switching in the first place is I don't want an iPod or anything that's connected externally to be interfering with the bluetooth module output should they both be on at the same time for any reason (and want to avoid creating my own mixer)
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