I do have a wiring diagram but it is digital and copy protected.
Anyway, dash lights feeds are orange wires. The radio is fed by two wires, the red one feeding the radio and orange again for the dial light. I would get the power for the autometer lights from the orange wires as well so they can dim with the dimmer knob.
There is an orange molded connector that feeds all the dash lights and it normally has an extra socket that takes a bullet connector.
The Yellow molded connector is a 12V accessory feed point.
Red is a battery (unswitched) feed.

Craig