I reconditioned them when I put them in. I soaked them in carb cleaner and changed their filters. I checked the resistance of 12 of them and took the 8 that had the closest value. In all honesty, after checking today, it may have been a looser connector that lowt connection when I hit a bump just long enough to throw the light. As far as the swap being worth it, no. Probably not. I didn't notice any difference in MPG or acceleration. It idled a little smoother after, but that is very marginal.
01 TJ - 4.0L, NV3550, 2" Skyjacker budget boost, Xenon flat flares, LoD front bumper, Tuff Stuff rear bumper, RH4X4 sliders, 33" STT Pros on 15x8s