I took out the Ford stereo and fitted a new one. From the wiring diagram
I've worked out most of the wires and have power to my new stereo.
However, I have a spare power and earth, which I've left for now.
Now what happens, I have no dashboard light. I'm assuming these spares
powered the light in the radio when the headlights are switched on, so now
they are spare the circuit is not complete and none of the dash lights
work. What can I do to complete the circuit?