I just installed a pioneer deck in my car. When i turn the car on, The trunk light comes on even tho its not open, My dome light stops working, My clock stops working. When i take the radio out the clock comes back on, my dome light comes back on, trunk light goes off. What could be the problem? I taped everything up.
Are you using a harness adapter or has the stock radio plug been cut off so you have to “hard wire” the Pioneer harness to the stock radio wiring?
Are you sure you are wiring it correctly?
http://www.installdr.com/Harnesses/HA-Wiring.pdf
Make sure any leads you do not use are capped off properly.
There could also be a grounding problem, the dome light, trunk/hatch light, clock and constant power for the HU, [radio] is off the same fuse, fuse 14- 15A, [hot at all times] in under dash fuse box, it is the white/yellow, [can be white/blue] lead in the stock radio harness.
Unless your Pioneer HU has an illumination lead, [orange or orange/white] the red/black lead in the stock radio harness is not used, make sure it is capped off, it is hot when park/head lights are on.94