First unhook the battery.
Pry off the trim plate that covers the center of the steering wheel, then use a 27mm socket on an extension to remove the steering wheel nut. Make sure any wires to the horn switch are unhooked, then pull off the steering wheel. There's a screw on the side of the lock cylinder holding it in. Loosen it and pull the lock out. The switch is on the back. There's a big plug connecting it to the wiring harness - don't worry, it only hooks up one way - and IIRC a screw or two holding it on, but as I remember the way to change them is pretty obvious when you see them.
You should buy the Bentley manual as the ignition switches have changed over the years.
With no key you will have to drill out the existing tumbler assembly from the switch in order to unscrew the ignition switch bezel.
You would have to drill out the center of the lock or have a locksmith pick the lock.
Had the same thing happen on a '73 SB. It turned out (after much cussing) to be the ignition switch. Try replacing the switch with an OEM and "see" what happens!
They twist left. They are a little hard some times to remove.
Remove the steering wheel and lock plate then the turn signal switch and key reminder contacts, then a screw that runs right against the lock cylinder and pull it out. You need a puller for the steeering wheel and a spring compressor fot the lock plate available to rent at most parts stores,
The 1975 regular Beetle windshield will fit the 1971 Super Beetle.
Remove the steering wheel. When you do, you'll find the stalk is held in place with two screws.
The current records are 19 in a New Beetle, and 17 in a 1971 Beetle.
All 1971 VW Beetle engines were manufactured with solid valve lifters.
Controls for what?
1971