Need help for fix amp running board steps for 2016 tundra platinum

I just installed the AMP running board power steps , but I have the following difficulty: everything works normally, only opening the driver's rear door, the running board doesn't work, please guide

 

Welcome from LA (Lower Alabama)! You might want to post some pics, including of the wiring. And you'll like get more responses if you post this question in the Ask The Toyota Mechanic thread,
https://www.tundras.com/threads/ask-the-toyota-mechanic.2404/

or this post that I just ran across might help,
https://www.tundras.com/threads/wha...5-gen-tundra-today.713/page-2658#post-3051383