S80 L6-2.9L VIN 92 B6294S2 (2004)
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Remove the right-hand front wheel for easier access for routing the cable to the Accessory Electronic Module (AEM).
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Remove the two plastic nuts which hold the small protective panel in the right-hand wheel housing, and remove the panel.
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Remove the six screws and the engine splash guard.
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Detach the existing ground cable for the front socket on the underside of the left-hand frame member.
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Route the ground cable on from the relay. Connect both ground cables to the existing ground terminal and tighten the ground screw firmly.