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Access to underside of fuse panel 700 1987

posted by  Bonzo on  Fri Nov 10 11:56 CST 2017
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last visit: Fri Aug 29 15:50 CST 2014
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87 760 gle
Fuse panel has three fuses that the plastic melted around the fuses I'm trying to bypass that with 3 inline fuse holder but I need access to under the panel does the white panel come up or I'm trying to get out the radio will getting out the radio give me access to the underside of the fuse panel, that is will I be able to lift it high enough to get into the panel








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    Replace entire block - fuses are thermally connected too 700 1987

    posted by  Amarin on  Fri Nov 10 20:53 CST 2017
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    Many years ago my 1994 940 had melted fuse holders 6 and 16 as I frequently use the blower and AC. I did bypass them with fuse holders before, but the holders themselves became warm during operation. After some years they also melted. So there must be more than what meets the eye here.

    I ordered a used fuse block from the eBay, took some time to install it (as per John Sargent's advice) and until today its still doing ok. And the fuses on the new (used) block runs cooler than when they were on fuse holders.

    I dismantled my old melted fuse block and realised that there's some kind of heat dissipation method used at the high current connections. What we see as fuses 14, 15 and 16 sharing the same supply also means they are sharing the same heat dissipation too. They share the same metal power rail within the fuse block. They are all thermally connected!

    You didn't mention which fuses are affected in your car but if they're the high current ones I think you're better off replacing the entire block than splicing in fuse holder.

    Regards,
    Amarin.







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    Access to underside of fuse panel 700 1987

    posted by  Nahtanha on  Fri Nov 10 12:35 CST 2017
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    There's two clips. One on the left and one on the right side. Press in the clips and pull out the fuse board. Disconnect battery first.








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      3 connections to each fuse?? 700 1987

      posted by  Bonzo on  Fri Nov 10 13:06 CST 2017
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      OK, I have access to the underside of fuse panel (kinda). I thought I would see 2 connections to each fuse, one for each side. I see 3, 2 beside each other, and 1 more separate!! To bypass the fuse with a new inline holder, which has 2 connections, do I use the 2, or somehow 3? I don't understand. Thanks.








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        3 connections to each fuse?? 700 1987

        uid 55's pic
        posted by  john sargent on  Fri Nov 10 15:45 CST 2017
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        The supply wire to each fuse is attached to the fuse block on the spade fitting which is in a rectangular socket. The load side of the fuse is comprised of the wires attached to male spades in the same color coded region.

        If you haven't already been to the FAQ, https://www.brickboard.com/FAQ/700-900/ElectricalCircuitsRelays.htm#Hot_Fuel_Pump_Relay
        --
        john








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          3 connections to each fuse - Y connector or splice? 700 1987

          posted by  Bonzo on  Fri Nov 10 17:14 CST 2017
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          OK so I guess I need a Y connector of some sort - 1 for the supply side, and the 2 sides of the Y to the load side, is that correct? Or can I splice the 2 load sides together?








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            3 connections to each fuse - Y connector or splice? 700 1987

            uid 55's pic
            posted by  john sargent on  Fri Nov 10 18:06 CST 2017
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            I would splice the wires with a wire nut. As noted in the FAQ, "You must continue to supply power to fuse 16, as fuses 14 and 15 are fed from the supply side of fuse 16"
            --
            john








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              Completed 2 of 3., fuse 22 has no supply side! 700 1987

              posted by  Bonzo on  Tue Nov 14 10:58 CST 2017
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              Not sure what to do since fuse 22 has no supply-side can splice the two output leads to something but where








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                Completed 2 of 3., fuse 22 has no supply side! 700 1987

                uid 55's pic
                posted by  john sargent on  Fri Nov 17 12:02 CST 2017
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                When you install the fuse to bypass fuse 21 spice in another wire, on the load side. Connect it to the spade fitting (in the protected recess) for fuse 21.
                --
                john








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              Replace entire fuse block 700 1987

              posted by  Amarin on  Fri Nov 10 20:18 CST 2017
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              last visit: Thu Oct 23 22:42 CST 2014
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              I did as you suggested in FAQ many years ago. I replaced the entire fuse block with a used one from eBay. My fuse holders 6 and 16 had melted out due to frequent use of the blower and AC. Took a little more time as you've said. Took me 3 hours. In the end its was worth it. Thanks!

              Regards,
              Amarin.







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        3 connections to each fuse?? 700 1987

        posted by  aleekat on  Fri Nov 10 13:58 CST 2017
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        last visit: Fri Oct 24 13:19 CST 2014
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        Some supply wires feed more than one fuse, as the fuse supply sides are connected inside the fuse block. If you are uncertain, take a picture with a digital camera before you start removing wires.
        --
        Post Back. That's whats makes this forum work.







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