At radio terminal # 7 - Red/Yellow and # 8 - Red/White are for circuit related to the dash and interior illumination.
If you have battery voltage at # 8 when lights are turned on, use a test light (bulb must be at least 10 w) to ground and note if here are any difference.
Ensure the illumination control switch is not turned to minimum or disconnected and taillights work.
As to radio not powering up, was it working prior to removal?
Have you check the ground circuit?
Thursday, September 20th, 2012 AT 6:11 AM