Low beams not functioning

shawnge97shawnge97 Member Posts: 2
edited October 2017 in Mercury
My low beams arent working all my other lights work just fine i have 94 mercury grand marquis ls Please help asap


  • Mr_ShiftrightMr_Shiftright Member Posts: 64,481
    Have you checked your fuses? Your owner's manual should have a chart to guide you to the right one to test. Use a continuity tester if you have one. If the fuse is good, then you want to get a test light to determine if there is voltage to the connector in back of the headlamp when low beam switch is on. Do those two tests first and then get back to us.
  • shawnge97shawnge97 Member Posts: 2
    If im not getting a voltage what shall i go for next?
  • Mr_ShiftrightMr_Shiftright Member Posts: 64,481
    I would go next to the headlight relay. I'm not an automotive electrical, so I'm just throwing out the more obvious possibilities. Sometimes, if you can find another relay in the relay box with identical part #s, you can do a swap to see if that was the problem. You can also learn how to test relays on YouTube:

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