Wont make the fuse dead on both side.Power comes to the fuse then thru it to the dimmer for dash lights.They will never work till you get power to the fuse.Thats why they put a fuse there to blow if the circuit shorts.You can replce the whole dash and switch and they still wont work.Try making a jumper to the fuse and then see if they light.That and get a test light to make sure the dimmer has power after you jumper the fuse.Rocky