Fuses blowing
We have a 2010 e60 with the N52k.
The trunk electronic activator latch would not operate. Upon opening the trunk with the key I pulled out the wire loom located in the right side trunk hinge. This is the BMW design fault where everyone has sheered off trunk wires from opening and closing the trunk (because the wires are channeled through the trunk hinge). Sure enough, all the wires were destroyed from opening and closing the trunk. The brown thick wire was fully cut in half. I could use a wire butt end connector to connect all the wires, but let's talk about soldering. When I twist the wires together and put the solder gun on the wires to heat the wire up (so the solder can melt them together), why doesn't the extreme heat being applied to the wires, blow the fuse in the fuse box? When wires heat up from faults, the fuse is supposed to blow. Shouldn't the heat applied from the solder gun blow the fuse in the glove fuse box? |
Originally Posted by scottalexander
(Post 1598061)
We have a 2010 e60 with the N52k.
The trunk electronic activator latch would not operate. Upon opening the trunk with the key I pulled out the wire loom located in the right side trunk hinge. This is the BMW design fault where everyone has sheered off trunk wires from opening and closing the trunk (because the wires are channeled through the trunk hinge). Sure enough, all the wires were destroyed from opening and closing the trunk. The brown thick wire was fully cut in half. I could use a wire butt end connector to connect all the wires, but let's talk about soldering. When I twist the wires together and put the solder gun on the wires to heat the wire up (so the solder can melt them together), why doesn't the extreme heat being applied to the wires, blow the fuse in the fuse box? When wires heat up from faults, the fuse is supposed to blow. Shouldn't the heat applied from the solder gun blow the fuse in the glove fuse box? |
Why would it? You're not supplying an electrical current. Fuses blow on an overload/surge not because of heat on a wire
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Originally Posted by seanjordan20
(Post 1598063)
Why would it? You're not supplying an electrical current. Fuses blow on an overload/surge not because of heat on a wire
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I thought he asked why the heat from the solder doesn't blow the fuse not heat from an overload (current). I could be wrong.
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Originally Posted by seanjordan20
(Post 1598080)
I thought he asked why the heat from the solder doesn't blow the fuse not heat from an overload (current). I could be wrong.
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You're right. I was not trying to respond to hypotheticals.
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What is inside this cigarette sized case (in the attached image).
https://cimg8.ibsrv.net/gimg/5series...d25f7ffb69.jpg |
Originally Posted by scottalexander
(Post 1598117)
What is inside this cigarette sized case (in the attached image).
https://cimg8.ibsrv.net/gimg/5series...d25f7ffb69.jpg |
When I was soldering the trunk lid wires back together after they were cut in half (from lifting the trunk lid open and shut after a number if years). I noticed the outside of the white box device in the picture was hot to the touch. It didn't seem right that it should be that hot.
Did heating up the trunk wires for soldering make this white box hot? I was wondering about the function of the white box to begin with because some e60 models didn't have one mounted next to the rear fuse box. |
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