melting fuses ?
 

for my brake lights on my truck, the circuit is rated for a 15 amp fuse, and it has a ten amp in it. what causes the fuse to just melt the one side of the plastic on the blade fuses? the fuses arent blowing, just melting and causing circuit to fail.

chevyforever

melting would be from excessive heat, but if it had excesive heat, that should be from excessive current, but if it had excessive current then the fuse should blow,,,, right?

so i don't know why it would be hot and not blow....

seems like it would blow the fuse,

hook up an ammeter (if you have access) just for kicks in place of the fuse and see how many amps the circuit is drawing

thats where i would start

melting? you must be pumping a cheeseload of amps through there!

Did you say blade type of fuse??? Do you have an aftermarket harness? Maybe the taillight and another acc is ran together in the fuse block ??

If the contacts on the fuse block get corroded it builds up resistance and you get a voltage drop and then the connector starts to drain current and heat up before it gets to the fuse. Clean the contacts well spray cleaner normally is not enough, try using a good red rubber eraser from a pencil then spray with a contact cleaner. Once it is cleaned good put some dielectric(electrical grease) grease on it. what will happen is it gets worse and even a 5 amp fuse will not blow the contact will melt and the wire before the fuse will start to melt and the wire harness is next to go. The only thing you can do if it is to bad is replace the fuse block and the wire harness end. or cut the wire and replace the connector with a donor. hope it helps.

Also if the connector is loose on that blade it will heat up.