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BMW 3-Series (E90 E92) Forum
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12V Key-On Power Source in Engine Bay
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06-01-2009, 06:46 AM | #1 |
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12V Key-On Power Source in Engine Bay
Anyone have a reliable 12V key-on power source under the hood that won't cause any codes or dash illuminated lights? Thanks in advance.
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06-01-2009, 07:14 AM | #2 |
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If its for meth i just simply drilled the positive battery post...wired that to my boost switch, this way the switch is always on but only sprays at 10plus. If its not for meth...ignore me.
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06-01-2009, 07:17 AM | #3 |
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It is for the failsafe under the hood. It needs a 12V key on source versus a constant power.
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06-01-2009, 07:36 AM | #5 |
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