Switched 12v

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  • f4tj0n
    E30 Addict
    • May 2013
    • 411

    #1

    Switched 12v

    Whats up guys,

    I've already used my switched power from the Aux Fuse block.. so where else can I get a fused switched 12v source from in the engine bay?

    Seems like the two "extra" slots in the main fuse block are constants.

    Thank you in advance.
  • vpilarrt
    R3VLimited
    • Jun 2006
    • 2096

    #2
    How much power (amperage) do you need?

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    • f4tj0n
      E30 Addict
      • May 2013
      • 411

      #3
      Just whatever to power my ABS. I couldn't imagine it would be much, but I figured I'd try to keep it safe and have its own fuse.

      Are you going to suggest just tapping into another circuit? lol


      Sent from my iPhone using Tapatalk

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      • RobDog
        Advanced Member
        • Aug 2012
        • 188

        #4
        I would wire a relay. Use the battery junction box as the source of power. Put a fuse inline close to the junction box (pin 30). Then use the switched power from the Aux fuse box to power/trip the relay coil (pin 85). Run a wire to ground for the negative side of relay coil (pin 86). Then you would have another fused switched 12volt wire (pin 87), similar to the aux fuse box.
        Last edited by RobDog; 02-19-2016, 01:18 PM.

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