Malek's 02 DC 4x4 - L3X0TA - 1UZFE + Manual Swap

This is ideal!
I am lusting over a v8 manual in my truck for so long...

 

Transmission Wiring:

In order to have a functional speedometer, 4wd ADD actuator, reverse lights, and the ability to start the engine from the ignition, I needed to build my own transmission harness and incorporate it into the engine harness.

There are 3 plugs mounted above the glove box that need addressed to get everything to work correctly. On the 5VZ, most of these wires are loomed in with the main engine wiring harness so I pulled out the wires I needed to make my standalone transmission harness.

IK2, IK3, and IK6 Plugs



IK2 Plug



This is the heaviest lift plug. All of the pins highlighted in green were used and the ones highlighted in red are either obsolete after the swap or not used. These plugs do not have their own pin outs in the FSM (at least not that I've found) so I made my own pin out to help me. This will solve your reverse lights, TC position switches, speed sensor, tach, coolant temp, and oil dummy light along with allowing you to start the engine from the ignition. The engine harness came with its own OBD2 harness so I left those alone on the truck. Note on the coolant temp, this is for the gauge cluster. It has one wire going to the sensor and another going to ground (pin 10 and pin 9, respectively). It is separate from the Engine Coolant Temperature sensor that the ECU uses to adjust A/F, etc.

IK3 Plug

This one is left over from the Park/Neutral Safety Switch from the automatic transmission. I cleaned out all the wires minus one which is used for the clutch safety switch. It goes from pin 8 on IK3->switch->pin 21 on IK2. Realistically, you could jump the two pins together behind the connector to fully get rid of the this plug but doing so is basically like having a fulltime clutch cancel switch engaged. This is the connection that the starter relay is looking for in order to start from the ignition. Up to you. Right now they are jumped on mine and wrapped in the glovebox because I haven't run them to the clutch yet.

IK6 Plug

This is an ADD only plug. Very straightforward. From ADD to this connector minus one wire, which is the ADD limit switch that goes to pin 3 on IK2.