A diagram of the 1971 Chevy Nova steering column would include the ignition and the shifter information along with the steering column itself. This type of diagram is often found in the Chilton's manual for the year and model.
Underneath dash just to the right of steering column.
One of the links in the search below should help.
I need a wiring diagram for the battery, starter, and solenoid of a 1971 Chevy truck, 350.
To replace the turn signal switch on a 1971 Chevy Pickup, first disconnect the battery to ensure safety. Remove the steering wheel by loosening the retaining nut and using a puller to detach it. Then, take off the steering column cover and locate the turn signal switch attached to the column; disconnect the wiring harness and remove the switch by unscrewing it. Install the new switch by reversing the procedure, reconnecting the wiring harness, and reassembling the steering column and wheel.
To replace the ignition cylinder on a 1971 Chevy El Camino, first disconnect the battery to ensure safety. Remove the steering column cover by unscrewing the necessary screws, then locate the ignition switch and the retaining pin for the ignition cylinder. Insert the key into the ignition, turn it to the "Run" position, and press the retaining pin to pull out the old cylinder. Finally, insert the new ignition cylinder, ensuring it's secure, and reassemble the steering column before reconnecting the battery.
Check the steering column. There is a switch mounted to the column that controls the backup lights and the neutral safety switch.
underneath the steering column. it will have leads running from it to the firewall as well as to the shifter
you can find this in the 1971 chevy2/nova factory assembly instruction manual
What engine? V8? 18436572 for chevy 1991 silverado v8 350 diagram
The switch is located on the steering column right before it exits the cab.
neutral safety switch on top of steering column under dash.
To change the ignition switch on a 1971 VW, first disconnect the battery to ensure safety. Remove the steering column cover by unscrewing any screws or clips holding it in place. Locate the ignition switch, disconnect the wiring harness, and unbolt the switch from the column. Replace it with the new switch, reconnect the wiring, reassemble the steering column cover, and reconnect the battery.