oh one more thing -- the GI OCD board converts the current from AC to DC, which means you actually have to put any wedge-style GI bulbs in the correct orientation (in terms of positive and negative leads), or they won't light up. without the board, they light up fine in either orientation, but GI OCD cares about the polarization of the bulb, because it provides DC current. This doesn't apply to the 44/47 bulbs (the ones with the cylindrical base), just the 555 ones (with the wedge-shaped base).
On STTNG, the only wedge-style GI bulbs are the shield inserts and the backbox. so if you install the board and some of your shield inserts or backbox bulbs aren't lighting up, just turn the bulb 180 degrees and try again.
During initial development, Herg came over to my place to test the GI OCD board on my STTNG, and when we booted it up, none of the 6 shield inserts lit up. he thought there must be a bug with his board, or a cabling problem, and we messed around with the multimeter and software diagnostics for a while, but in the end it turned out i simply had all 6 bulbs oriented the wrong way, which is a 1 in 64 chance but somehow i managed to do it, haha.
i don't think the bulbs are labeled for which lead is positive or negative, so you will likely have to guess and then any that don't light up, just flip them around.