HID: Load Resistor

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  • Maddog
    Advanced Member
    • Dec 2006
    • 115

    #1

    HID: Load Resistor

    I finally bit the bullet and installed a Morimoto HID setup using its own relay harness. As part of it, I installed in parallel a 50 watt 6 ohm load resistor to avoid a low beam check light; HID lamps are 35 watts.

    The load resistor seems to overheat after the lights running for 15-30 minutes and the circuit triggering the low beam out light, but after works again after cooling off. The resistor is mounted on a metal surface.

    Has anyone experienced this? I plan to replace the load resistor and if it still persists to upgrade the resistor to a 100 watt 6 ohm.

    Appreciate your feedback/insight.
  • MrBurgundy
    R3V Degenerate
    • Mar 2012
    • 5575

    #2
    I use these and never get any kind of indication unless a light is actually out

    https://www.morimotohid.com/morimoto-canbus-2-hid-harness?quantity=1&utm_medium=cpc&utm_source=googl e&utm_campaign=22430343077&utm_content=_c_&gclsr c= aw.ds&gad_source=1&gad_campaignid=22430344715&gbra id=0AAAAAoSgE2_2tmaOrKQ5DFZCoKWBmOq9K&gclid=CjwKCA jw-rTUBhAiEiwADv8gBJnawndZgcLsogMjcjq7w2_9CddIDIbj9IL t8qQDp9zzsKb0DZmwgxoC1AcQAvD_BwE
    Current Collection: 1990 325is // 1987 325i Vert // 2003 525i 5spd // 1985 380SL // 1992 Ranger 5spd // 1973 Porsche 914 // 2005 Avalanche // 2024 Honda Grom SP // 2024 Yamaha XSR700 // 2025 Jeep Wrangler Rubicon X

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    • Maddog
      Advanced Member
      • Dec 2006
      • 115

      #3
      Thanks MrBurgundy. Will give it a try.

      Comment

      • MrBurgundy
        R3V Degenerate
        • Mar 2012
        • 5575

        #4
        Originally posted by Maddog
        Thanks MrBurgundy. Will give it a try.
        np my guy

        Current Collection: 1990 325is // 1987 325i Vert // 2003 525i 5spd // 1985 380SL // 1992 Ranger 5spd // 1973 Porsche 914 // 2005 Avalanche // 2024 Honda Grom SP // 2024 Yamaha XSR700 // 2025 Jeep Wrangler Rubicon X

        Comment

        • reelizmpro
          R3V OG
          • Dec 2003
          • 9546

          #5
          I have 15 year old DDM HID units that don't trigger the bulb out warning when turned on. I'm surprised the Morimoto's don't have load resistors built in.
          "I'd probably take the E30 M3 in this case just because I love that little car, and how tanky that inline 6 is." - thecj

          85 323i M TECH 1 S52 - ALPINEWEISS
          88 M3 - LACHSSILBER
          89 M3 - ALPINEWEISS II
          91 M TECH CABRIO 2.7L TURBO - MACAOBLAU

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