Identify the wires on your vehicle and trailer by function only. Primus iq electronic brake control for 1 to 3 axle trailers proportional.
![no image](http://1.bp.blogspot.com/-gIdQCoMIkSk/UYl-cRQtiHI/AAAAAAAAJC0/p9xZetaajI8/s000/grey.png)
Identify the wires on your vehicle and trailer by function only. Primus iq electronic brake control for 1 to 3 axle trailers proportional.