Replacing a stereo into a 2005 Saturn Ion

2007 Saturn Ion 1 Car Radio Wire Diagram
Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Black/White
Car Radio Illumination Wire: Brown
Car Stereo Amp Trigger Wire: Pink
Car Stereo Amplifier Location: Located under the rear deck in the trunk.
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue

The first thing you need to do is doublechecking all the new wirings, it sounds like a contact.

Buy wiring kit and radio dash kit from parts store for the paticuliar vehicle remove old radio, splice wires from new stereo to wiring kit, they should be color coded, install radio dash kit plug in wiring harness slide stereo into dash and enjoy

dismantle the switches from the problem door.look careful at all connections and wipe clean of all grease , dirt with clean cloth and reconnect

Have you spliced wires already? If not may I suggest buying an installation harness faster insatallation and less headaches. If you need more information please respond to this thread. Good Luck.

You should buy the the wiring harness for your vehicle and then you wont have a problem because it will have the proper color connections for your new headunit. You can purchase the wiring harness at any car stereo or electronics store that sells car stereos.

because you will actually need to take the wiring harness off of the original stereo and splice the old harness to the new stereo

Not real clear on question, but you can buy a direct fit wire harness and the wires are color coded so you don't have to cut and splice your wires on your factory harness.The harness hooks to your factory plug and you wire it to your pioneer stereo wires. Harness is about 7.99 up at most stores.

should go to any local junkyard to get the stock harness, or you can decipher and splice each vehicle wire to the appropriate wire on the stereo. If it was me, i'd go the junkyard route, much easier in the long run.