You'd use a # 9510 40 amp breaker for the 12-v accessory circuit to the trailer connector and either a 20 or a 30 amp breaker on the circuit powering the brake controller. For a trailer with up to 4 brake assemblies, a 20 amp breaker like # 9506P would be perfect. For more than 4 brake assemblies, use a # 38630 30 amp breaker.
To set up your 2013 Ford Edge to tow a trailer, you'll need a brake controller. The Tekonsha Prodigy you'd looked at, part # 90885 would be a fine choice, it's reliable... view full answer...