1990 Pontiac 6000 LE  (aka The Google) 

I am its second owner. The first owner apparently bought it new, drove it for a while, and then parked it in a field for 10 years. Unfortunately, the car is rusting away. The bottoms on the rear doors are completely rusted through. And apparently the previous owner decided to turn into a pole, and theres a nice dent on drivers side

, as you can see by the spots on the pavement. It has a horrible oil leak, due to a blown headgasket. If i had the money, i'd fix this car up. It's a beast,  

I love this instrument panel. As you can see, the check engine light is on. Don't know why, i think its just broken

It says 127,439 miles. I'm keeping it till 175,000 or till the motor dies, which ever is first.

Kenwood Kdc-138. Needed something to replace the Delco

3.1 Liter Fuel Injection. Reliable engine. But, i wanna do something with it.

I'm not quite sure what this thing is, but the wires to it were cut by the previous owner. Anyone know what this is,  what it does?