Saturn Wiring Issues.

[Goblin Truck]

I have a 99' SL1 and I put in a new stereo. When I put it in and started the car, it lit up the stereos' screen half way and makes a loud piercing noise from the right left speaker. When I turn the key to accessory it flashes the stereo twice with full-brightness then dies. If anybody has any troubleshooting tips for this let me know, thanks!

[fetchitfido]

The big yellow wire is power, the small yellow wire is speaker.

If that's not it then it's something else, could be just a bad head unit.
Some '89 GM's use this and some '00 GM's use it...all '91-'99 S-Series do (though dimmer polarity flips between '95 and '96) and most if not all GM's '90-'99 use it.