I believe that the safety switch was only used on the older units with the cast iron fuel distributors and sometime around 1980 those were phased out. So the 560's do not have them.

Actually, they were kind of handy, just pull the connection off and no need to bother with the relay.

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Chuck Taylor
Falls Church VA
'66 200, '66 230SL, '96 SL500. Sold: '81 380SL, '86 300E, '72 250C, '95 C220, 3 '84 280SL's '90 420SEL, '72 280SE, '73 280C, '78 280SE, '70 280SL, '77 450SL, '85 380SL, '87 560SL, '85 380SL, '72 350SL, '96 S500 Coupe