I took the 560SEL for a little drive tonight and when I pulled it back into the garage, I let it sit running so I could pop the hood and listen closely to the engine for any strange noises. All of the lights were off and it was pretty much pitch black in the garage, so to my amazement, as I was leaning closely over the driver's front fender, I noticed that I could see a faint pulsing of spark in the line that crosses directly behind the lid of the power steering pump. There was also a streaking pulse that was not as consistent that traveled on the same line between the cap/rotor and the power steering pump. Is this normal or do I need to change the wires soon? Again, totally dark out and just detecting a faint sparking pulse on those areas. Thanks - Mike