2003 Chevrolet Impala Owner's Manual - Page 143
2003 Chevrolet Impala Manual
Page 143 highlights
Auxiliary Power Connection (Power Drop) Your vehicle is equipped with an auxiliary power connection. This feature provides power, ground and accessory wires which can be accessed to add aftermarket electrical equipment to your vehicle. It is located on the passenger's side of the vehicle, under the glove box, and is labeled with a wire function and fuse rating. Notice: Adding some electrical equipment to your vehicle can damage it or keep other things from working as they should. This wouldn't be covered by your warranty. Check with your dealer before adding electrical equipment, and never use anything that exceeds the amperage rating. For information on accessing the connection and electrical hookup, please refer to your service manual. To order a service manual, see Service Publications Ordering Information on page 7-9. 3-20