[I wouldn't get a Voyager even for free... ... ..... [/QUOTE]
I agree. I installed one on a '94 Ford F-250HD when it was new. The controller caused the trailer, a triple axle Airstream, to lurch and buck or failed to apply adequate braking. After stopping in the middle of a few intersections with white knuckles gripping the wheel and foot pressed to the floor I contacted Tekonsha. They graciously arranged for me to receive a free replacement from a local dealer. The replacement produced identical symptoms. Then Tekonsha helpfully explained that my controller's ground return wire was inadequate for the current draw and suggested I install a larger gauge wire back to the negative battery post. I did. Same symptoms.
After that experience I "installed" the Tekonsha Voyager on a shelf in my shop. It has worked great and I haven't had any further problems with it. It has been sitting there reliably for about six years.
Tekonsha is a good company but the Voyager was/is a poor product. It relies on the truck's ability to create enough braking force without trailer brakes to swing the pendulum in the controller which, after a short time lag, activates trailer brakes. That may work fine with a light trailer behind but with 15,000 pounds or more of combined weight, relying on the brakes of a truck with rear drum brakes, even a HD 3/4 ton with properly adjusted brakes, to create deceleration sufficient to swing the pendulum simply doesn't work well. I adjusted the pendulum and gain on each of those controllers a thousand times. It would stop reliably once or twice then the the next time I tried to stop it would either lurch and overbrake or brake insufficiently to stop the truck and trailer. It was really exciting when I applied brakes while on a slight up or down grade or crossing bumps or railroad tracks. I think it was sensitive to voltage also. I'm not sure but it seemed to react differently with the state of charge of the truck's battery.
For those of you who like Tekonsha Voyagers, I offer no argument. It is your money, your truck, your trailer, and your choice. I'm simply reporting my experiences.
I would be happy to donate my Voyager to anyone who wants to use it but, in my opinion, it is not worth the time and labor to box it or the postage to mail it.
Harvey