strange electrical problem-

[nctom]

95 2.3 electrical system completely dead.No lights,horn,nothing.Truck drove fine earlier today.Battery is 3 months old.Will be getting it tested in the morning.Any suggestions if the battery checks ok?Thanks

 

[Rosberg1]

Try cleaning off the posts and terminals with a wire brush and make sure they're tight. Also, check your fuses, under the dash and under the hood. Also check the trailer harness if you have one. Sometimes those can ground out and blow fuses.