Re: busted cable
Hey, that's good news in a way...you can get the trailer to the dealer for them to make sure everything is working as it should. But it seems unusual to me that the emergency/breakaway cable got so taut that it broke, yet the brakes were not locked up, so please make sure the trailer guy thoroughly checks that function out, in case some day you actually need it (I hope you never do). Oh, and since you no longer have an emergency/breakaway cable, make sure the trailer is hitched up good
.<br /><br />As far as the trailer brakes working on the way to the dealer, you can probably make it there with no trailer brakes at all if you drive safely, leaving lots of room for stopping, anticipating when to stop, etc.
Only you can make that final decision. If you're really concerned about the trailer brakes working on the way to the dealer, you should be able to check them at home. There's a master cylinder in the trailer coupling with a piston that gets depressed by the forward momentum of the trailer when the tow vehicle slows. The whole front of the trailer coupler slides back and forth to do this, so if you can
block one side of the trailer securely so it doesn't move, then jack up the other side, you can test whether the brakes actuate by pushing back (toward the stern) on the coupler to simulate the forward momentum. You'll need a 2x4 for leverage and someone to spin the wheel
in the forward direction while you push on the coupler. If the brake works, the spinning wheel should stop when you push. When I replaced my trailer brakes I had my kid use a big screwdriver to pry directly on the end of the rod that actuates the master cylinder piston; that worked easier than using a 2x4 on the coupler. Alternatively, you could use the truck in reverse to actuate the coupler but this is kinda scary and must be done
very carefully to avoid knocking the trailer off the jack with someone right next to the wheel spinning it.<br /><br />If the spinning wheel stops when you actuate the master cylinder, you should have braking action on the way to the dealer. If it doesn't then you'll likely have no trailer brakes and be back to driving safely and carefully should you decide to go. And your dealer will have lot$ to check and repair. Good luck.