I'm trying to run a car stereo from a mains supply, but I'm a bit
clueless about wiring it up, and I wonder if some bright spark out
there can help me. Briefly, I have a power pack which provides a
regulated 5 amp 12 volt DC supply. The stereo harness has five wires (I
can deal with the speaker cables OK!): a yellow wire marked 'Battery +
12V', an orange wire marked 'Auto antenna', a white wire marked 'Panel
light', a red wire marked 'Ignition', and a black wire marked 'Ground'.
The power supply has positive and negative terminals (obviously). What
do I connect to what? Many thanks,

Alistair