Okay...I've read a million things. Trying to simplify this and wire it up tomorrow. Here's the harness I have. Top left we'll call purple. below that is a brown/black wire, and the one on the right is blue. Now look at this diagram I found. Can I assume, that with a relay, my lock up will only engage when the toggle is on AND the trans is in 4th gear? This sound optimal to me. By that logic, any time i mash the throttle, and my trans kicks down, my lock up will disengage? I'm fine with no pressure switches or brake switches. I'll just turn things on when cruising or on the highway. Will this work? I'll assume my purple is the same as the red on the diagram. Yah? Thanks guys! Hopefully I'll be rolling this weekend!!