How do I hard wire a 12V accessory

[PJayUK]

Getting close now with my IPOD integration project. The Harman and Kardon unit has three wires for power. a Red marked ACC/Ignition Switch, Yellow marked +12V dc and black marked GND. The yellow and black seem straightforward but I am unsure what the red one is for.

My plan was to take the feeds from the rear of the cigar lighter to the black and yellow connectors but I was hoping that someone could offer some advice on where I should hook up the red acc/ignition switch wire (or could I simply leave it for the time being?)

Thanks all.

 

[gbjeppm]

The red should go to the switched 12 v feed which can be found at the cigar lighter.

The yellow needs permanent 12 v which you could get from the back of the radio.

Ground is ground.

Does that help

 

[PJayUK]

Yep, I think so... Only the command is a bugger to remove