If you already have a 7-way on your 2020 Nissan NV 3500 then yes, the Tuson DirecLink Base Model Trailer Brake Controller # 335DL-100 has everything you need to install it. If you don't already have a 7-way you will need to add one to be able to use the brake controller and the brakes on your trailer.
The first thing you need to add is a 4-way. The # 118553 from Tekonsha is the most reliable option. Then, you can upgrade to a 7-way with the # ETBC7. This comes with the adapter, wiring,... view full answer...
With the Yakima RoundBar Crossbars # Y00410 attached to the SkyLine Towers # Y53TR you will need to remove the RoundBar SL Adapter # Y03536 and install the LockNLoad SL Adapter # Y05042. You will need 2 sets of the adapters as they are sold per for one set of towers as you could have 4 or 6 mounting points. You will use the same Landing Pads # Y00221 on the towers as they do not need changed. Yakima has verified this setup will fit with their Yakima LockNLoad Platform Roof Tray # Y42AV... view full answer...