2007 Buick LaCrosse Owner's Manual - Page 449

Electrical System Add-On Electrical Equipment Notice: Do not add anything electrical to your vehicle unless you check with your dealer first. Some electrical equipment can damage your vehicle and the damage would not be covered by your warranty. Some add-on electrical equipment can keep other components from working as they should. Add-on equipment can drain your vehicle's battery, even if your vehicle is not operating. Your vehicle has an airbag system. Before attempting to add anything electrical to your vehicle, see Servicing Your Airbag-Equipped Vehicle on page 80. Headlamp Wiring The headlamp wiring is protected by a circuit breaker in the underhood fuse block. An electrical overload will cause the headlamps to go on and off, or in some cases to remain off. If this happens, have the headlamp system checked right away. Windshield Wiper Fuses The windshield wiper motor is protected by a circuit breaker and a fuse. If the motor overheats due to heavy snow, etc., the wiper will stop until the motor cools. If the overload is caused by some electrical problem, have it fixed. 449