In electronics, it is generally standard to use red wire for positive (+) connections and black wire for negative (-) connections. 1  What other colors you use is largely a matter of choice and will depend on the specific circuit you are building. For example, there are a few different ways you could wire this circuit with red, green, blue, and yellow LEDs, but they will all work exactly the same:
Bruno de Heceta (Hezeta) y Dudagoitia was born in Bilboa, Spain, in 1743 to an old Basque family. The Spanish claim to Alaska and the Pacific Northwest had dated back to a 1493 papal bull (Inter caetera) and rights contained in the 1494 Treaty of Tordesillas.
About Bruno Giacosa Bruno Giacosa is a famous wine producer based in Piedmont, Italy. It is particularly known for its intensely perfumed, textured wines from the Barolo and Barbaresco appellations, made from the Nebbiolo grape variety.