The notched end goes to the pad with the bar (or where the arrow points to)

The symbol looks somewhat like this

>|

and the notched end should be to the right in this pic

Looking at the image on his web page (hope you dont object to me borrowing it here)



the 2 lower LEDs should have the notches oriented "up", and the top 2 LEDs the notch oriented "down".

/Michael
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/Michael