100W LED Power Meter

I added wire to the positive and negative posts.  I had cut the connector off of a DC adapter and used alligator clips to connect the posts to the DC wires.

Optionally, you can add a 2.1 mm DC jack to the board and this will allow you to plug in a regular DC adapter.

Be sure put the capacitor ahead of  the leds and in the last spot at the negative line.

Add the leds in the line. Be sure to cut the silver strip between the wire and the next led.