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Q: 87 Grand Marquis 5.0L V8 Where is the Headlight relay located? on 1990 Mercury Grand Marquis

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I replace the dimmer switch but my low beam light still won't come on purchased headlight relay but can't locate it under the hood.
(1) Answer
Have you checked your headlight switch - the switch itself? Common for failing. And usually ruining and melting the wiring connector too. Inspect that.
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