Brake Controller Wiring - Need Help

[LanceMan]

Hi, I posted this in the Freightliner section but no joy so I thought I would try here too...

I have a brake controller that has 4 wires (Blue -- carries the brake controller output voltage, White -- provides the ground connection, Black -- is the 12-volt power supply, and Red -- connects to the brake stoplight switch located above the brake pedal). I'm trying to wire it to the under dash pigtail on my 2010 F-liner XCL Chassis but I don't have an adapter so I will hook it up by splicing. The 6 wires for the pigtail are thick red with white stripe, thick black, thick red, small brown, medium pink, small grey, and small red with white stripe. Can someone tell me what wires to slice together? My trailer is a tandem axle utility that uses the supplied plug on the back of my 2010 Itasca Meridian 40L. Many thanks, -Roy
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[OSSKOBRET]

i found that the plugs are diferent from model to model. what i did was take a photo of pig tail in coach and connector of controller (i found yhey were different) so find adapters that are compatable with each then use a lighted voltage detector and write down what each color wire does and match that fnction to the controller function DO NOT JUST MATCH THE WIRE COLORS!!!!!! you may find that the coach has more wires in pigtail than you need per your controller so on my rig i used two product pigtails to make one. in my opinion splicing is a bad idea be patient you can find the rifgt stuff to do it right. good luck