Chevrolet 2003 Astro Owner's Manual page 315

Fuse/Circuit Usage
Breaker
DIODE-I Air Conditioning
Blank Not Used
Blank Not Used
Blank Not Used
LIGHTING Courtesy Fuse, Power Adjust
Mirrors Fuse, Truck Body Control
Battery Fuse
Power Accessory Circuit Breaker,
Stop/Hazard Fuse, Auxiliary Power
Fuse, Cigarette Lighter Fuse, Radio
Battery Fuse
BATT
Fuse/Circuit
Breaker
IGN A
IGN B
ABS
Blank
RAP
HTD MIRI
RR DEFOG
Usage
Starter Relay, Ignition Switch
Ignition Switch
Electronic Brake Control Module
Not Used
Radio Accessory, Power Windows
Rear Window Defogger,
Climate Control Head
5-98