500SEL (126.037) V8-5.0L (117.963) (1984)
Reserve Power Source: Service and Repair
Special Tools (Vehicles Up To 9/87)
Type 1:
NOTE: Type 2 is distinguished by:
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Modified arrangement of red, 10-pin plug from footrest to panel situated below footrest.
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Modified arrangement of buffer battery/reserve power source from footrest to panel situated below footrest.
Removal:
1. Turn ignition key to position 0, disconnect and insulate negative battery terminal.
2. Remove floormat from front passenger's footwell.
3. Remove footrest from bulkhead (arrrowed).