tried my own suggestion, did not work… doesn’t look like there’s a way to do it as equipment actually refers to archtypes… Though I guess it still possible if you do some work between the misc_goods.ini, misc_equip.ini, light_equip.ini, goods.ini and of course, you have to have the light’s nickname listed in the market_misc.ini else you won’t find it for sale anywhere.

Still can’t sell running lights because different ships have different numbers of running lights. The above suggestion would be for headlights and docking lights only.