The last wire, you can't see it here just pretend, is the one th…

The last wire, you can't see it here just pretend, is the one that runs under the truck and is tapped into the purple/yellow wire on the trans. The end up here goes onto the toggle switch that is "ON" when you push it. Mine is on top with the white dot so you know which end to push to turn it on. You also connect the black wire from the LED here to the wire that goes down to the E4OD too. Nice thing about this Mod is that the orange light will come on whenever the Torque Converter is locked up, even if you don't turn the switch on and lock it yourself. So you can watch at what speed it does lock up normally without you pushing the switch! If you just want to install a LED and not a switch so you can monitor your Torque converter just buy a LED and hook the red wire to power and the black to the purple/yellow wire under the truck and it will light up whenever it locks up!

Owner caption February 2009 · Photo 85 of 377