Issue with new Prodigy and/or trailer brakes

[AaronSEIA]

Just put my new Prodigey in this week. Veyr happy with it on my 4 horse trailer. Hooked up to the 2 horse and it displayed NC-no trailer connected. Took the plug apart and had my wife work the manual lever. I had power to the plug, through the plug, and at all 4 magnets. Any idea why it'd say NC? I don't know if the thing is "smart" enough to sense a bad magnet and just won't work at all or what might be going on. Just looking for some input before I start throwing money at it till it works.
Aaron SEIA

[Got Diesel?]

Originally Posted by AaronSEIA

Just put my new Prodigey in this week. Veyr happy with it on my 4 horse trailer. Hooked up to the 2 horse and it displayed NC-no trailer connected. Took the plug apart and had my wife work the manual lever. I had power to the plug, through the plug, and at all 4 magnets. Any idea why it'd say NC? I don't know if the thing is "smart" enough to sense a bad magnet and just won't work at all or what might be going on. Just looking for some input before I start throwing money at it till it works.
Aaron SEIA

Well, if one trailer works and the other doesn't you have eliminated the truck as the problem. I would check your ground on the trailer side. Some believe that it will ground through the ball I have found this to be incorrect.

Check each ground on the brakes (pull on the wire to make sure you have a good connection) Then run a jumper from a good ground location on the trailer to a good ground on the truck.

[2Tight]

Check your grounds as suggested. When I connected my Tekonsha P3 the first time it said 'NC' and then "Open Ground'. I jiggled the plug side of the trailer connection and it didn't help change the display but all the trailer lights were working. As soon as I towed it about a mile the brakes were working fine. I think the ball mount was rusty and making poor contact. I love all the great functions on this controller especially the boost settings and back-up override.

[durantdiesel]

I manage a trailer mfg company, and the way I wire trailers is every light, brake etc is grounded through the plug, which in turn grounds to the Breakaway kit. We also have 2 ground wires drilled into the frame of the trailer, one at the axles and the other at the breakaway kit.

[TPford]

Not too sure if you have fixed your problem but I had come accross the same problem with my prodigy. I started with the simplest solution and cleaned the contacts on both the 7-pin plug connection on the back of the truck AND the trailer plug. A little paitents and som fine grit sandpaper....No more connection problem.

I have found that it doesn't take long for corrosion to appear in the plug of my travel trailer here in Southeast Louisiana.

[Fordpowerstroke350]

to clean the contacts on the seven pin plugs I use a finger nail board trimmed to a useable width. Have use this for many years