Wireing problem, could catch fire, to help you out.

The problem states above will make the car so it won't start, as the battery will be almost dead after a couple of days or so. If you have changed the battery, alternator, starter, and you are going nuts trying to find out why the battery goes dead, you might remove the alternator and coil pack with mounting bracket. (disconnect the negative battery terminal first). Then trace the wire loom that goes to the alternator, take a close look at the loom where it passes by the exhaust manifold. Peel the black wire loom from the wires and take a good close look with a flashlight. You will need to peel the 4 wires apart like peeling a banana. Some heatshrink butt splices work fine. MIke

This regal is a 3800cc V6. Vin L. MIke

http://www.youtube.com/watch?v=KF1gijj03_0

The two ground wires are called G107 in the service book. One is the ground return for the Oxygen sensor and the ground for the ECU, both inside of the ECU. So if there has been a poor fuel economy, (like with my car, poor gas mileage), or odd, Check Engine lights, or engine problem code numbers that pertain to the Oxygen sensor, then this could be the problem. ECU problem codes like Oxygen sensor circuit open, or Oxygen sensor out of range.(greater than one volt on the Oxygen sensor lead. Mike

get a NEW battery...clean the black 1/0awg cable as it attaches to chassis ground...wirebrush the lug--wirebrush the chassis...bolt together with the bolt and perform the parasitic draw test~