Originally Posted by Prof. T. Soggmeyer
The 700r4 should lock-up in 4th gear (stock set up). The torque converter is locked in by a solenoid when the trans is in 4th. There is a switch inside the trans that triggers this. This trans needs 12v key on power to operate. There should also be a vacuum switch that is in that hot wire to only allow it to lock under vacuum. This is a stock set up. You can put a kit in it to let you manually
lock it in 2nd and 3rd. I just did mine with a tci kit this way. I also put a little l.e.d. light between the manual switch and ground just for kicks. There is plenty of info here for you to check out. Hope this helps..Brad
Good info there, Prof. I wired mine up with a LED lighted rocker switch.