3
My uncle told me to never trust a 'no power' diagnosis without checking the fuse with a multimeter first. He was right.
3 comments
Log in to join the discussion
Log In3 Comments
simonh7411d ago
Honestly, even a good fuse can fail under load, so always test it.
2
jessica_hall499d ago
That visual check Linda mentioned saved me last week on a 3 amp fuse that looked fine. But @simonh74 is right about load testing. I had a 5 amp blade fuse in my old truck pass a continuity test on the bench, then fail the second I turned the headlights on. It's the heat from actual current flow that finds the weak spot. A basic multimeter test at your desk might not catch a fuse that's about to go.
3