Brake controller not detecting trailer

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Jul 28, 2014 | 01:40 AM

blackgold50

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Brake controller not detecting trailer

Ok I just pulled the crappy brake controller (pretty sure it was not working) out of my new to me 2000 f-250 and installed my prodigy p3. With the old one I wasn't sure it was working and had no idea how it worked. The old brake controller harness bypassed the controller plug by running a white wire back to the battery. I connected the new tekonsha adapter normally (all wires connected to plug) and am getting a message no trailer detected. In the rear, there is a square plug with a wire harness that goes to a round one. I bought a round plug to 7pin and found that the clip on the tori& side round plug is broken. Are there any decent square plug to 7 pin harnesses out there? Are there any tests that I can do to further track this issue/verify it is the harness?
Thanks,
Brian

Jul 28, 2014 | 06:35 AM

RV_Tech

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Joined: Jan 2010

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From: Bristol, TN.

Quote:

Originally Posted by blackgold50

Okay, when you are tethered to the trailer do you have trailer lights, etc. so we know if anything in the harness is good.

If you have trailer lights, unplug from your truck, and with a good battery on the trailer, pull the break-away pin on the trailer, and try to pull the trailer with your truck. if you can easily pull it, there is a problem with the trailer, so troubleshoot that first.

If the trailer is stuck fast as it should be, the problem is with the truck. Can you take a picture of what is broken as I am having a hard time following. :0

Steve

Jul 28, 2014 | 09:48 AM

BPofMD

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From: Millersville, MD

Don't keep the brake-away cable disconnected for long. If it IS working you can burn up the wires going to the wheels.

Jul 28, 2014 | 10:35 AM

blackgold50

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Ok. Yes I have light but at least one is intermittent. My brother in law told me I had a light out thn he called back and said it was good. The trailer worked fine on my gmc so I'm not worried about the trailer side. I will get some pics shortly. Thanks. There is also a green wire that isnt attached to anything (looks cut) near by.
Brian

Jul 28, 2014 | 10:50 AM

blackgold50

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Ok. This is the plug that is broken on the truck side.

This plug that I just bought fits loosely in it.

This is the plug under the truck that the broken round plug connects to

This is the green wire not connected to anything.

Thanks

Jul 28, 2014 | 05:01 PM

meborder

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Joined: Jul 2011

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From: Sioux Falls Area

looks to me that this might fix you up:
Tow Ready Custom Fit Vehicle Wiring for Ford F-250 and F-350 Super Duty 2000 - 118243

plus you would get a couple of extra relays and fuses to boot ....

Jul 28, 2014 | 11:04 PM

blackgold50

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I saw that harness on amazon but it had some bad reviews. I went ahead and ordered it. Will be here Wednesday so we shall see if that was the problem.
Thanks