HangTon LP20 2 Pin Male Cable Plug Female Panel Socket for RV Solar Furrion Solar Charge, Waterproof Power Connector Industrial Bulkhead

I installed one of these https://www.amazon.com/dp/B07DLTV59M/?coliid=IC9N530SUG7OX&colid=2FAKG42ZGE4KA&psc=1&ref_=list_c_wl_lv_ov_lig_dp_it in the side wall of pass through to run wires for ground deploy panels to the controller. You could also look at bulkhead mount SAE connectors. But make sure of the wire polarity as there is another kind of connector that is similar to SAE but the wire polarity is reversed.