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  • Opus Fuses

    What Fuse would i connect between the opus and the +12v battery. I was thinking of a 1A. Is this going to be alright. I have searched but no one seem to specify what fuse? yeah i know a blade fuse but what rating e.g. 1A 2A, 15 A etc.

  • #2
    If it's the 150W version, 15A.
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    • #3
      i know there is a fuse in the opus that is 15A, but whta would i put on the out side, between the +12v and battery. Do i fuse the +12V red wire out of the opus or the switched yellow one?

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      • #4
        You should but one 15A or 20A as close to the battery as possible.
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        • #5
          The fuse in your OPUS is to protect the OPUS. The in-line fuse that you're supposed to add on the +12v wire is meant to protect your battery and your wire(s) from going up in flames. This is your +12v RED wire.

          15A should be the minimum in-line fuse for your setup. If you put one that's too small, your OPUS will pop it by mistake. I wouldn't go higher than 20A.

          For your info, 1A @ 12 volts = 12 watts.

          The yellow wire is the accessory power input. You need to tap into an existing wire in your car that only gets powered when your key is in the ACC or ON possition. You can fuse that if you are really paranoid. I imagine that 1A would suffice since the OPUS doesn't really draw power from it.
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          • #6
            Also, remember, it IS important to fuse physically close to the battery. Imagine if you have a 10 foot wire between your battery and your Opus, and something rubs through 8 feet from the battery and touches the frame. If the fuse is after that point, then there's nothing to stop the wire from welding itself to the frame and either burning or melting down your battery. If the fuse is near the battery, on the other hand, the feedback will pop it instead and save you a lot of money/effort.

            This is not one of those 'whatever' pieces of advice.
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            • #7
              I have a question along the same lines. What size fuse would you use if you have an opus and 2 amps? Would I just add the fuse amounts of all three things?
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              • #8
                Originally posted by Quattro-A4
                I have a question along the same lines. What size fuse would you use if you have an opus and 2 amps? Would I just add the fuse amounts of all three things?

                Yup.

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