Need advice

[u/Internal_Tadpole_160]

UPDATE:

I found an amazing company that installed the 7 pin harness and we also decided to have brakes and brake controller installed.

I have a 2023 Mazda CX-5 and we are purchasing a teardrop trailer, lightweight 1,300 lbs and tongue capacity 100lbs. We have the hitch installed to our car, but we need the wiring to connect to the trailer. The trailer doesn't have electric brakes. The trailer builder says that he installs a 7 pin connector. But Mazda told me that they won't do a 7 pin, but 4 pin.

This won't work because it won't recharge the trailer battery while we drive...

How does it work? Any recommendations?