Audio Technica Headshell and Cartridge Wiring
Audio Technica cartridge wiring follows standard four-pin SME-type
headshell wiring convention. Install the safety guard before installing the leads, and always follow best practices stated in the manufacturer documentation.
Cartridge Pin Layout

There are two main cartridge pinout orientations, where one is the standard square orientation as with the common AT95E cartridge, and the other is the staggered layout as with the AT150MLX cartridge. Both of these pinouts have the same colour code for the wires.

Colour Code
Colour | Channel | Phase |
GREEN | Right Ground (RG) | - |
RED | Right Signal (R+) | + |
BLUE | Left Ground (LG) | - |
WHITE | Left Signal (L+) | + |