I did a search for a wiring diagram for the brake controller you have, this is the best I could find, the diagram is not specifically
for a T4R, but may help.
Click on the link for more info and instructions.
https://www.etrailer.com/question-6890.html
"Question:
I need a wiring diagram for a tekonsha voyager electronic brake control can some one please help me?
asked by: Russell
Expert Reply:
Yes we can help. To the right there is a picture that has a diagram of how most brake controllers wire up, if you click it you will
be able to see an enlarged version of the picture. Below you will find a link to the installation instructions and to wiring instructions for
wiring brake controllers. All brake controllers wire pretty much the same with a white ground wire, a black power wire a
red brake switch wire and a blue brake feed wire that goes to the trailer brakes.
If you would like to give some information about your vehicle, I could make a more specific recommendation on
how to wire it and let you know if any other parts are needed. I would need the year, make, and model of your truck along
with the type of trailer connector you have at the rear of the vehicle."