I agree with MB Doc, unless you have a fire all you ever have to replace is the resistor ends.

PVL wires are the worse, the ends are much worse than Bosch which are much worse than Beru. Beru are what the car came with. All of this is based upon looks. They all work.

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician