A short or overload. Get a wiring diagram. Find the circuit. Disconnect items on that circuit one at a time. If all are disconnected and the fuse still blows, you've got a wiring harness issue.
A feed wire is shorting to a ground causing the fuse to keep blowing .
SOURCE: the audio/clock fuse blew and every time I replace the 15w fuse it blows
i would try to unplug the clock and the radio change the fuse and see if the fuse blows.
SOURCE: 98 grand cherokee asd relay blowing fuse
The fuse it doing it's job, you have a short ( Wire that is connected to a ground, that draws too much power )
If you have an electrical schematic ( Repair manual ) find out which wires are connected to that fuse and check them for any chaffing, cuts, unnesassary twists, or corrosion.
If you have a ohm-meter, isolate the system ( by disconnecting the fuse, and other connections. Then check for any resistance on wires that should not be connected ( because you disconnected them ) by having one Lead on the wire's connector and the other meter-lead on your car's frame. A good wire will not have continuity if it is isolated.
SOURCE: 97 ford taurus fuel pump 20amp fuse blows after u
Sound like your fuel pump is shorting out. You may need to have it replaced.
SOURCE: I have a 1990 pontiac bonneville LE. I was driving
From your description it seems the dynamo has shorted. Get that checked first.
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