I am troubleshooting my lights as they don't light and found that within the bulb area there are a set of parts that are unfamiliar with me. They are in series with the power line to each bulb and it looks like some type of light bulb, no identification, 1" long and very black/discolored towards the tip, wired in parallel with it device is a 1/2" plastic case thing that looks as though it contains staples from a common household stapler, possibly some type of inductor? What I have found from the mfg is that the wall wart holds the ballast. If it matters the bulbs are 17" long and are marked F15T8, DWW, RP
Thanks!