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With LS swaps now in vogue, one of the common trends is using the late-model CS130D alternators. The connector is usually labeled PLFS or PLIS. The only wire used is the L position, connected to the charge indicator light on the dash. Do not connect this directly to a switched 12-volt connection, as this will damage the alternator. If a warning light is not used, then you must install a 50- to 80-ohm, 5-watt resistor in series to a switched power source. We’ve seen connectors without the labels, in which case you’d use the third position counted from the large end of the connector. In the photo, you would connect the brown wire to the dash light.