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Registered
Join Date: Jul 2001
Location: Cave Creek, AZ USA
Posts: 44,693
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I had been running it for a while without grounding it and it worked fine, though still no LED. When I grounded it to the frame, the LED did not illuminate. Do I need to run it to the neg. battery terminal?
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2022 BMW 530i
2021 MB GLA250
2020 BMW R1250GS
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