i need wiring info for the mass air flow sensor pig tail.

What is your question?

i have idling issues. code po120. however i notice two of the wires, leading to pig tail,of MAS connector, have been spliced. connector has five wires in all. the two that im concern about are black with yellow stripes. i cant tell if who ever spliced into them hooked them together right. idk why they would splice two ground leads into them anyways. how can i figer which gos where