Any idea how this could happen? (Brake lights quit working, fuse melted?)
#1
Any idea how this could happen? (Brake lights quit working, fuse melted?)
So I was troubleshooting why my brake lights quit working. They just quit randomly and I was notified by my friend following behind me.
When I tried removing the fuse, it was very difficult to do so. After I finally got the fuse out, I was surprised to see that the socket appeared to be melted.
I have only messed with the engine wiring harness, never the interior harness, and have never even been up or around the fuse box.
Here is what it looks like...(Bad fuse slot, good fuse slot, and removed [deformed] fuse).
When it comes to electrical, I don't really know as much as I probably should, but I have no idea why this happened. The fuse was the correct amperage for the slot, and got hot enough to deform the fuse and damage the panel, yet didn't blow the fuse???
Anyone else ever had this problem? I checked voltage to the fuse slot and I get 11.5VDC. It seems to have destroyed the contact, but I can wiggle the voltmeter probe to get the voltage reading.
When I tried removing the fuse, it was very difficult to do so. After I finally got the fuse out, I was surprised to see that the socket appeared to be melted.
I have only messed with the engine wiring harness, never the interior harness, and have never even been up or around the fuse box.
Here is what it looks like...(Bad fuse slot, good fuse slot, and removed [deformed] fuse).
When it comes to electrical, I don't really know as much as I probably should, but I have no idea why this happened. The fuse was the correct amperage for the slot, and got hot enough to deform the fuse and damage the panel, yet didn't blow the fuse???
Anyone else ever had this problem? I checked voltage to the fuse slot and I get 11.5VDC. It seems to have destroyed the contact, but I can wiggle the voltmeter probe to get the voltage reading.
Last edited by Darwantae951; 04-26-2016 at 04:35 PM.
#2
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Corrosion on the fuse contact. I would guess the main problem is on the feed side of the fuse so the added current draw was not though the fuse itself but upstream of the element.
When you get a little corrosion it increases the resistance and it will get hot. This will create more corrosion and then more resistance and then more heat....repeat as needed until something melts!
When you get a little corrosion it increases the resistance and it will get hot. This will create more corrosion and then more resistance and then more heat....repeat as needed until something melts!