Used this for 6 trips and have traded the vehicle for a truck with factory controller, so my loss can be your gain. If you have a vehicle and don't want to hard wire a controller, this is the answer, ad from amazon, it sells for $237.95
I'll sell and ship for $150
Link for more info,
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
PORTABLE. The Echo trailer brake controller has a non-invasive install and is easily transferrable from one vehicle to another. It plugs into any 7-way connector, wirelessly links to your smartphone using Bluetooth
SMARTPHONE-READY. The Echo brake controller wirelessly syncs with your Apple or Android phone, turning it into a brake controller interface with the Smart Control app (Warning: Avoid distracted driving. Only make adjustments when vehicle is stationary)
ZERO-TOOL INSTALL. Installing this trailer brake controller is as easy as plugging in a 7-way trailer wiring connector. It requires no tools, no extra wires and no hardware. A locking tab and strap keep it firmly connected. NOTE: Strap stored inside cap
HIGHLY RESPONSIVE. Echo uses a triple-axis accelerometer to provide smooth, safe braking. It maintains responsive braking, even when your phone screen is locked, receives incoming calls or if the Bluetooth connection is lost
VERSATILE. This electronic trailer brake controller easily transfers between vehicles and trailers and works on virtually any trailer with 1 to 2 axles (2 to 4 brakes). It is also fully compatible with cruise control, anti-lock brakes, low-voltage systems