PSM button would be in one of the wings up the side like (as well as shaped the same) as power lock button.
The big round hole (same size but on opposite side from cigar lighter) is for intermittent wipers OEM. However, some will add a second power point there or wire it for something else (like the OBC hack, radar detector, homelink, etc....). Post a link or a picture if you can for more details.
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