I was switching out my battery in my 2000 ML 320. I touched the positive terminal off the piece of metal that surrounds battery. When this arced out I lost all my gauges. I checked all the fuses in the fuse box and they're good. Was talking to Roy and one of his buddies said it's the K 40 relay. I can't find the K 40 relay anywhere. Does anyone know where it's located. Or is there anything else I can check?
Thanks. Jay

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