Disconnect all the factory alternator connectors from the supplied adapter . Check for power with a 12volt test light on the Red, and White wires. White gets power from the 7.5 amp ALT-S fuse in the engine compartment, red gets power from the 7.5 amp ECU-IG fuse under the dash. If this test out good the alternator is grounding out the Pink wire or the pink wire has a short to ground. You can disconnect the alternator connector and the light should go out! If not you have a short to ground on the pink wire somewhere. Good luck.