Trailer with rear steering axles

[PetervR]

you could use a "servotester". their use is to test servos without using radio controll.
and in this case the cheaper the beter. basically the electronics from a servo without the servo.
http://www.youtube.com/watch?v=4N_FXFopjo0
grz PetervR

[elliot330]

Thanks for the ideas guys. I should've said that I already fitted servo's on the rear trailer axles, so need something electronic. The servo tester option looks good. I might see if I can explore that.

Thanks