Why is my Jeep jl aux switches not working?

The multiple auxiliary switches in the Jeep Wrangler JL can really be a convenient feature, right up until the point where they're a massive headache. They're known to fail, and You can find many anecdotal accounts online of drivers trying to get them to work. There are a few things that can go wrong, and with a digital multimeter, You may just be able to figure it out. Essentially, the reason for failure is going to be electrical, ninety nine out of a hundred times. You'll need to look either for a bad fuse or a bad wire. If You remove the switches from the cluster, You should be able to test the wire leads coming to each to see if it's juiced up. If for some reason its not, You'll know where to begin Your replacement.