1998 Chevrolet Express Van Owner's Manual - Page 300

Electrical System Add-on Electrical Equipment Headlamp Wiring The headlamp wiring is protected by a circuit breaker in the lamp switch. An electrical overload will cause the lamps to flicker on and off, or insome cases to remain off. If this happens, have your headlamp wiring checked right away. NOTICE: Don't add anything electrical your vehicle to unless you check with your dealer first. Some electrical equipment can damage your vehicle and the damage wouldn't be covered by your warranty. Someadd-on electrical equipment as can keep other components from working they should. Your vehicle has an air bag system. Before attempting to add anything electrical to your vehicle, see "Servicing Your Air Bag-Equipped Vehicle" in the Index. Windshield Wiper Fuses The windshield wiper motor is protected by acircuit breaker and afuse. If the motor overheats due toheavy snow, etc., the wiper willstop until the motorcools. Although the circuitis protected from electrical overload, overload due to heavy snow, etc., may cause wiper linkage damage. Always clear ice and heavy snow from the the windshieldbefore using the windshield wipers. If the overload is caused by some electrical problem and not snow, etc., be sure to get it fixed.