Where do I find the ends of these circuits?

[EMD_DRIVER]

In my power distribution box, I have relays and fuses for trailer usage.

#4 is the fuse for trailer backup and running lights.

#6 and #7 are fuses for trailer stop/turn lights.

#18 is the fuse for the trailer battery charge.

#21 is the trailer brake feed.

Relay 2 is for trailer backup lights.

Relay 4 is for trailer running lights.

Relay 5 is for trailer battery charge.

All of the appropriate fuses and relays are in their respective spots, in the distribution box. Is there a connector somewhere, that the trailer connector hooks to? Is there also a wire, to run to my brake controller? I looked it up in the owner's manual, but couldn't find the info I am looking for.

Thanks,
Gary

 

[BROWNIEBOY525]

the connector is in the cab,Under the dash right in the middle above the trans tunnel.

 

[94f450sd]

the conector for the controller is under the middle of the dash as was said above me.the trailer plug connector should be under the rear bumper area somewhere or they my just be stray wires capped off hanging out of the taillight harness.