Your magnet is too strong. Its pulling on the steel inside the distributor. For proof, pull the cap and put the magnet close to the rim.
SE Guy, just poking a little fun. Its a great bright picture, impressively clean area. I was enjoying looking at it, then I realized I was looking at something familiar but not what I expected: those bright shiny aluminum things and that lever thing on the right. Then it hit me: Where's the battery, where's the disty?, that stuff isn't there on an SL. No insult, just confused at the focus of the picture and how my eyes and brain enjoyed the puzzle. I think you were pointing out the 'green' lead that is probably standard on ALU disties. I have to guess at it being standard on all ALU disties. (Its standard on my 061 from a 70 280 SEL motor.)
Its no fair because most of the beautiful things in that picture are not there in an SL. And, Other stuff is there. And there's no disty, just all this other great looking shiny clean stuff. Puzzling, There is no battery, no disty, and that stick on the right: the handbrake lever
. If you are trying to buy points for an SL and you don't have much experience under these hoods, you might be wondering why your car doesn't look like that. (Asside from being much dirtier
.)
Is the distributor alu or not? I checked my ALU 061 last night with a strong magnet. Surprise
! The magnet clamps strongly to the ALU disty
. But how can that be?
Its the internal steel parts from the shaft all the way up to the breaker plate. If you are not suspicious at the appearance and feel of the metal you just might think the magnet is attracted to the surface metal not the internal ferrus metal parts many milimeters beneath the ALU surface. You have to pull the cap and check near the rim before a strong magnet lets you know its non-ferrus.