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Old 04-08-2016, 07:57 AM   #21
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Name: Dave W
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Originally Posted by gordon2 View Post
All interesting ways to check to see if the lights work on your trailer and that can come in handy sometimes such as trouble shooting some bad wiring on the trailer.

But what you really need to know is, do the trailer's running lights work when hooked up to, and powered by, the tug? So there is no substitute for making a light check part of your routine when getting ready to depart.
An easy way to do a light check after hooking the trailer up to the tow, especially if you are by yourself, is to go to the back of the trailer and hit the remote lock button on your car keys. The car lights will flash signalling the doors have locked, and if the trailer connection is working properly, your trailer lights will also flash. Easy peasy.
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Old 04-08-2016, 08:04 AM   #22
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Sounds good but my ole '99 Nissan Frontier doesnt have all the fancy stuff. I had to install the brake controller AND my 7-pin socket at the back. Big job. To me, this "Box" is just fun stuff if you love hobby electronics the way I do.

For what it's worth, I always test my truck's connection with one of these devices (see link). I bought it when I installed my brake controller so I didnt have to second guess if it was working. Keep in mind, this was all done BEFORE I went to Backus to pick up my Scamp. A friend volunteered to let me bring my truck over to test it. I didnt want to do that. I keep this with me and help others if they're having connection problems. Personally, with a trailer, I wouldnt be without it. One other thing I noticed about this device and it threw me initially is, the "brake" LED lightly blinks continually. But, that's the controller sending out a blip to make sure the brakes are still there. Otherwise, on my Tekonsha Prodigy, I get an "NC" on my display meaning "Not Connected". Also, if you have someone apply the brakes with the brake lever on the controller, you can watch the LED dim and brighten based on the lever position. So that provides a test within itself of sorts. Good stuff!

https://www.etrailer.com/Accessories...nsha/6562.html

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Originally Posted by Ice-breaker View Post
An easy way to do a light check after hooking the trailer up to the tow, especially if you are by yourself, is to go to the back of the trailer and hit the remote lock button on your car keys. The car lights will flash signalling the doors have locked, and if the trailer connection is working properly, your trailer lights will also flash. Easy peasy.
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Old 04-08-2016, 08:27 AM   #23
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I couldn't find RV wire by the foot available locally so I just made my own extension out of lengths of wire pairs from West Marine (local store) adding a male RV connector at each end. I duplicated the wire gages found in a RV cord. Finished it by wrapping the wires in a length of generic spiral plastic cable wrap. The patch cord goes between the box and the tow, thus two male ends. The box having two female receptacles.
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Old 04-08-2016, 08:57 AM   #24
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Sounds good to me. The 10Ga I may have some left over from the brake controller installation.

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I just made my own extension out of lengths of wire pairs from West Marine (local store)
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Old 04-08-2016, 11:45 AM   #25
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And regarding digital thermostats...I think you're confusing me with someone else, and if it's who I think it is I'll try not to be offended.
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Old 04-08-2016, 11:54 AM   #26
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Oops! My bad and apology Steve L. (Steve D. was the other). Both are long time posters. Wow...lotsa Steves, Bobs and Johns on forums...

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And regarding digital thermostats...I think you're confusing me with someone else, and if it's who I think it is I'll try not to be offended.
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Old 04-08-2016, 12:20 PM   #27
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I don't know Steve D. so it wasn't who I thought it was. Whew! And nevermind who!
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Old 04-30-2020, 01:37 PM   #28
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Trailer Lights TESTER

This is usually not a "HOT" topic, but for the "hobbyists" that like to dabble in electronics, gadgets, making things, etc., this is something that might interest you.

It's my trailer lights TESTER! I have posts from 2016 here where I was wanting to build it. I actually finished it last year. It actually SAVED my bacon when my trailer's left signal/brakes lights wouldnt work. This box hooked to it told me they WERE working. It was my truck/tow.
I wont go into details but can answer any questions- if anyone is interested. Most of the panel and wiring diagram pics will answer most I think.

There's a few features I put in there for kicks: One is, I can "apply" the brakes with the rheostat and check the amperage! There's a built-in fan that cools the rheostat. I have a "Blinker" relay in there to simulate ACTUAL signal lights when you're testing. (Sounds cool clicking as they blink ) EVERY trailer light can be tested with this box from the running/park/tag lights to backup lights...all of them. And yes, the trailer has to have an onboard battery to operate the box as that's where it gets its power.

This was a fun project to fool with and build...AND it works!!
Attached Thumbnails
IMG_0273 (640x468).jpg   IMG_0276 (640x339).jpg  

IMG_1593 (640x355).jpg   Board_Components-wiring (640x451).jpg  

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