The new Northern Lights S3C panel is p/n 22-91216. The older version was 22-91211. The 22-91211 is the panel in most of the current parts books.
Here is a parts breakdown of the new 22-91216 panel: 22-91216 panel Parts breakdown. Please be aware that the gauge bezels do NOT come with the gauge. They are a separate part number.
The only way to determine which panel the customer has is by looking at the back of the gauge.
Below is a photo of the back of the new style gauge.
Contact Parts & Power if you have any questions concerning parts for the new or old S3C panels.