Do I really need trailer brakes?
This looks like a good place to ask a question about "brake controllers." I have a 2009 Mercury Mariner w/3liter 6cyl motor, 4wd, installed tow package that can evidently tow 3500 lbs but something about the electrical relays limits me to 4pin towing harness which excludes a brake controller. Is a brake controller/electrical brakes essential for even the lightest TM models?
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