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How to replace RV fuses

If you hang out in your motorhome and suddenly the lights go out, the TV turns off or if another electrical appliance stops working, the culprit can be an annoying fuse! Fortunately, it is very easy to replace an RV fuse and get back to relaxing. It’s just a matter of finding your fuse box, identifying and testing the fuse to make sure it doesn’t work, then pulling it out and inserting a new one. It is a good idea to have spare fuses, a test light and a pair of needle pliers or fuse pullers in your motorhome when driving on the road, so that you can quickly troubleshoot and solve fuse-related problems.


[[[[Edit]Find and check the fuses

  1. Find the 1
    2-volt fuse box in your motorhome’s electrical compartment and open it. The electrical compartment can be in a closet, a cupboard or behind a panel on a wall or under a seat. See your motorhome’s operating instructions if you are not sure where the fuse box is located. Remove the panel that covers the fuses when you find it.[1]
    Changing RV fuses Step 1.jpg
    • Replacing an RV fuse is something you would do if a certain electrical appliance in your RV stops working, such as your TV or refrigerator. This usually happens when you use too much power at the same time.
    • Motorhomes usually have both a fuse box and a switch that are next to each other under the same panel or in the same compartment.
  2. Look for any tripped switches and turn them back first. If you only have one trigger, inspect the circuit breaker before examining the fuses. Return any switches that are in the OFF position to the ON position.[2]
    Changing RV fuses Step 2.jpg
    • If the electrical appliance in question starts working again at this time, you do not need to continue. You can turn off the power switch and fuse box and get back to whatever you did.
  3. Read the fuse labels to find the fuse for the appliance that is not working. Find a marked diagram next to the fuses or on the inside of the fuse box panel. Read the labels to determine which fuse corresponds to the appliance in your motorhome that stopped working.[3]
    Changing RV fuses Step 3.jpg
    • For example, if there is a label that says “SATELLITE POWER 5 AMP” in the upper right corner of the label diagram, the fuse you are looking for is a 5 amp fuse in the upper right corner of the fuse box.
    • You may be able to tell which fuse is bad just by looking at them as well. Blown fuses often have a dark, burnt appearance or a visible break in the metal wire that you can see through the glass or plastic.
  4. Test the fuse with a test lamp. Attach the test lamp alligator clamp to any screw on the fuse box to ground the test lamp. Press the test light probe on the left and right sides of the fuse without removing the fuse and make sure that the lamp in the handle lights up.[4]
    Changing RV fuses Step 4.jpg
    • If the light does not come on on one or both sides of the fuse, it is bad and you will need to replace it.
    • If the light comes on on both sides of the fuse, this is fine and the problem is elsewhere. For example, you may have a major electrical problem or it may be a problem with your appliance.
    • You can buy an LED test lamp online or at a car supply store for as little as $ 10 USD.

[[[[Edit]Remove and replace a fuse

  1. Buy a replacement fuse with the same voltage and current. The grades are written directly on the fuse. Buy a replacement fuse with the same voltage and current that is written on to replace the bad fuse.[5]
    Changing RV fuses Step 5.jpg
    • Generic fuses are quite inexpensive. You can buy them online or in a spare parts store.
    • It is a good idea to have a box with spare fuses with different currents in your motorhome. That way, if a fuse blows on the road, you can quickly replace it without any hassle.
  2. Switch off and disconnect the electrical appliance for the fuse you are replacing. Turn the switch for the electrical appliance to the OFF position. Also disconnect the appliance, if possible, to ensure that it does not have access to electricity when you insert a new fuse.[6]
    Changing RV fuses Step 6.jpg
    • For example, if the lights in the living room of your motorhome go out, make sure that all the switches in that area are turned off to prevent them all from turning on at the same time when you install a fuse.
  3. Pull out the bad fuse using a fuse puller or needle pliers. Grasp the fuse between the jaws of the fuses or the needle pliers and gently push to grasp it. Pull it straight out of the fuse block to remove it.[7]
    Changing RV fuses Step 7.jpg
    • Fuse puller is a tool of the plastic pliers type that is specially designed to fit around the fuses and pull them out. Your motorhome may have a couple hanging somewhere inside the electrical compartment.
  4. Connect the new fuse to the empty fuse box space. Position the new fuse so that the current is right side up and facing you. Slide it into the place you just pulled out the fuse until it’s all the way.[8]
    Changing RV fuses Step 8.jpg
    • You do not need any special tools to do this. The fuse should just dive right into place neatly and easily.
  5. Test the new fuse and the corresponding electrical appliance. Check both the left and right sides of the new fuse with your test light probe and make sure the light in the handle turns on. Connect and try to turn on the electrical appliance that did not work to ensure that the new fuse fixed the problem.[9]
    Changing RV fuses Step 9.jpg
    • If something like a light bulb still does not work after replacing a fuse, check that the light bulb itself did not blow as well.


  • If you do not use your motorhome often, it is a good idea to test all your fuses and replace all bad ones before taking it on the road. For example, if you only use it in the summer, check your fuses when you take your motorhome out of storage and get ready to travel in it.[10]


  • Always switch off and unplug the electrical appliance that corresponds to the fuse you are replacing before removing the old fuse and inserting a new one.[11]

[[[[Edit]Things you need

  • Test light
  • Fuse puller or needle pliers
  • Replace fuse


  1. https://www.youtube.com/watch?v=gGSrs1dcyZc&feature=youtu.be&t=9
  2. https://www.youtube.com/watch?v=gGSrs1dcyZc&feature=youtu.be&t=30
  3. https://keystonerv.avalamarketing.com/media/9141971/keystone-owners-manual-2019.pdf
  4. https://blog.emanualonline.com/how-to-use-an-automotive-test-light/
  5. https://mobilerving.com/blog/changing-a-simple-fuse-in-your-rv
  6. https://www.travelliterv.com/fckimages/PDF/brochures/Travel-Trailer-Owners-Manual.pdf
  7. https://www.youtube.com/watch?v=7b2Fy-8EiVA&feature=youtu.be&t=149
  8. https://www.youtube.com/watch?v=7b2Fy-8EiVA&feature=youtu.be&t=159
  9. https://www.youtube.com/watch?v=7b2Fy-8EiVA&feature=youtu.be&t=169
  10. https://www.travelliterv.com/fckimages/PDF/brochures/Travel-Trailer-Owners-Manual.pdf
  11. https://www.travelliterv.com/fckimages/PDF/brochures/Travel-Trailer-Owners-Manual.pdf

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