2004 Chevrolet Silverado 1500 Pickup Owner's Manual - Page 389

Auxiliary Battery The auxiliary battery provision can be used to supply electrical power to additional equipment that you may choose to add, such as a slide-in camper. If your vehicle has this provision, this relay will be located on the passenger's side of the vehicle, next to the auxiliary battery. Notice: Leaving electrical equipment on for extended periods will drain the battery. Always turn off electrical equipment when not in use and do not use equipment that exceeds the maximum amperage rating for the auxiliary battery provision. Power Winches If you wish to use a power winch on your vehicle, only use it when your vehicle is stationary or anchored. Power Take-Off (PTO) Before using a PTO, if equipped, refer to the manufacturer's or installer's instructions. To engage a PTO on a vehicle with a manual transmission do the following: 1. Hold the clutch pedal down. When using this provision, connection should only be made to the upper stud (A) of the relay. Do not make connections to the lower stud (B) of the relay. The auxiliary battery circuit is protected by a megafuse located behind the auxiliary battery. Be sure to follow the proper installation instructions that are included with any electrical equipment that you install. 2. Set the parking brake. 3. Shift the transmission into NEUTRAL (N). 4. Engage the PTO. Refer to the manufacturer's or installer's for instructions on electrically engaged PTOs. 5. For mobile operations, shift the transmission into the gear you want, apply the regular brakes and release the parking brake. For stationary operations, leave the parking brake applied. 4-99