Troubleshooting Kwikee 39 Series Step That Keeps Blowing Motorhome Fuse

Updated 03/10/2020 | Published 03/09/2020

Question:

My kwikee step 39 blows fuse in motorhome. I checked power on red wire from bus and I get power from white when the key is on. as soon as I ground the control box 909506000 it blows fuse in bus??

asked by: Ron S

Expert Reply:

I reached out to my contact at Lippert who said that if you keep getting a fuse that blows when everything is connected for your Kwikee 39 Series Steps then something is going on with your wiring. You either have a damaged (pinched or exposed wire) or a loose connection somewhere. Try checking visually to see if there is anything that is damaged first. I have attached a diagram that you can check out to make sure everything is connected properly.

The only other thing that I've seen people talk about is a bad motor. My contact at Lippert said typically if it's a bad motor then the motor just won't work. What you can do to test this is to apply 12V power directly to the motor to see if it operates properly. If it doesn't then you will need to use the Motor Upgrade Kit # LC379769.

expert reply by: Jon G