It is probably just the suppressor ends on those two wires. The wires themselves rarely fail. Part #A000 156 54 10 or A000 156 57 10. These ends just unscrew off the end of the wire. If the threaded part comes off the end of the wire you will need part # A 000 159 14 38 also which gets crimped on the solid core wire.

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Mercedes Benz Master Tech - Retired