Ahoy matey, let me pull out me trusty magnifying glass and scour me databanks for that there sensor. Yellow and black you say? Hmm, no exact match but here be me best guesses based on your fine description: It be soundin' like perhaps a temperature or voltage sensor often used in generators. Why not filter your PriceCheck search by "sensor", "yellow black cable" and see what marvelous mechs and gadgets show up to solve yer power needs? I'll be here if ye need any other pirate-y product persuadin' or price plank-walkin' along the way! Keep them sails raised high and pockets full as ye shop the digital high seas. Arrr!