Align the holes located on the top of the fuse with the prongs on the fuse tester.

Press the prongs into the holes gently, making sure the prongs make contact with the metal at the bottom of the holes.

If the light glows green, the fuse is in working condition, if not, move forward with this guide.

If the light does glow, the fuse is likely not the cause of the issue you are having, you may be better off trying a different solution.