OLD STYLE 6 WAY TRAILER PLUG- Below is the trailer wiring code:
>Running Lights- white wire- TM prong
>Left Turn- green wire- LT prong
>Right Turn- red wire- RT prong
>Brakes- black wire- S prong
>Ground- any color, has knot tied in wire within 1'-2' from plug- GD prong
>Load lights(optional)-any color-CENTER prong