if you want it to work only when ignition is on, run a good piece of thick wire from aux on ignition to live on cig lighter fit a in line fuse, and earth from cig lighter to a good earth on car.
I say thick wire, because if you use thin wire, and in future sell car and next owner uses a cig lighter there is risk of a fire.
Edited by Willo (23rd Aug 2011 1:39pm)
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