i just bought the rustys tail light housings. if i remember right theres a small marker bulb, 2 bulbs that are both stop and turn with the other element being ur night running lights. take a test light or leave a bulb plugged in and have some one press the brakes. see what element lights up in the bulb. then turn on the turn signal and watch again. if both the brake and turn signal run on the same element (which i think they do) you run that wire to the leds brake/turn lead. then the running light wire to the running light lead.
if you have any trouble just ask or pm me and ill bust out my test light and a beer