In my opinion the best wires are the factory ones because they are solid core!! This means as long as they are not worn through or broken they are as good as new!! Like a speaker wire, How often do you replace those??

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Benzmac:
ASE CERTIFIED MASTER AUTO TECHNICIAN
LEAD TECHNICIAN FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM