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2nd Generation
Lightning w/Viper spec t56 need speedo help
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<blockquote data-quote="Quagmire" data-source="post: 10620237" data-attributes="member: 110807"><p>Well they both should be hall effect sensors to my knowledge. So 2 wires for cobra, means its a standard unpowered gate meaning it open and closes letting voltage through. The 3 wire one means it is powered. Mean there's a 12v power, signal and ground. So if you hook up the 12 feed to one of the two wires, and then the 2nd goes to the signal side of the sensor, then you would have to make a ground for the 3 wire, then it should work correctly. But you do not know the type and where the ref point for the hall effect sensor is. So you speeds could be off. The 12v feed should come from the ecm on of the vehicle side is 12 the other is the signal, but you more than likely need to ground the sensor still. Pm if you don't understand ill draw you a diagram</p></blockquote><p></p>
[QUOTE="Quagmire, post: 10620237, member: 110807"] Well they both should be hall effect sensors to my knowledge. So 2 wires for cobra, means its a standard unpowered gate meaning it open and closes letting voltage through. The 3 wire one means it is powered. Mean there's a 12v power, signal and ground. So if you hook up the 12 feed to one of the two wires, and then the 2nd goes to the signal side of the sensor, then you would have to make a ground for the 3 wire, then it should work correctly. But you do not know the type and where the ref point for the hall effect sensor is. So you speeds could be off. The 12v feed should come from the ecm on of the vehicle side is 12 the other is the signal, but you more than likely need to ground the sensor still. Pm if you don't understand ill draw you a diagram [/QUOTE]
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Lightning w/Viper spec t56 need speedo help
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