this should help
http://chevythunder.com/16136965_ecm_diagram.htm
To remove the headlamp bulb on a 1991 Chevrolet Caprice simply twist the retainer counterclockwise, remove the bulb from the headlamp capsule and unplug the bulb from the wiring connector. To install the new bulb plug it into the wiring connector, insert the bulb into the headlamp capsule and twist the retainer clockwise and you're finished.
The transmission dipstick for the 1991 Chevrolet Caprice is located on the side of the transmission. It will be behind a valve cover.
You will find a free wiring diagram at: www.veryuseful.com/mustang/tech/engine#Diagrams Good Luck!
Pimp your car
The transmission in the 1991 Chevy Caprice is a 4 speed automatic with overdrive. This transmission is found in both the base and classic trims.
NO, Its a Honda motor. No.
Integrated into the alternator.
You can find wiring diagrams for this vehicle at www.autozone.com.
I get around 21 to 22 on the highway.
1991-1996
normal size blade fuses