Although it does not matter which leads from your multimeter you use to test AC current, when testing DC, it is imperative that you use the positive (red) lead on the positive (+) side and the negative or ground lead (black) on the negative (-) or ground side of DC circuits.lthough it does not matter which leads from your multimeter you use to test AC current, when testing DC, it is imperative that you use the positive (red) lead on the positive (+) side and the negative or ground lead (black) on the negative (-) or ground side of DC circuits.
Always verify your Mercedes-Benz color code on your vehicle before ordering. Obsidian Black Metallic may go by several different names and the color sample shown above for 2015 Mercedes-Benz S-Class is approximate. Show all 17 colors for 2015 Mercedes-Benz S-Class.
Obsidian was so named from its resemblance to a stone found in Ethiopia by Obsius. It was used in antiquity for amulets and necklaces. Obsidian is a naturally occurring volcanic glass. It is usually an opaque black or grey but may be yellow, red, greenish brown. Obsidian may have an iridescent sheen caused by inclusions. Obsidian is used for ornamental purposes and as a gemstone. Many colored glasses are sold as obsidian often claiming to be natural.