I just purchsed som carbon fiber lights and they are set up for the 3rd light. I usually just leave the thrid one blank but the previous owner has a bulb already there. So what do I wire this too? do I just wire them to the brake light or to the turnsignal? I haven't pulled the old ones off yet to see how many wires there are going to the brake light. I would assume a set for turn and brake but we all know what happens when you assume.

TIA

04 Ranger