Well, I made something that's transformer powered, it has a high intensity 40ma LED on top, a button on the side for the AC, and spring loaded test pins to probe the board. The pins are spaced to mate with the lighting module. I press the AC button, and it applies power to the module and the test LED on top lights. When I release the button, I can check for the decay of the light to see that the cap is working. I typically test these before they're split, so I have 25 completed units on a panel, and I just probe them one at a time for test before I separate them.