When I built a 2FE for my '84 FJ60 I stripped the FJ62 harness down to just the motor/EFI stuff. IIRC what that left me was 3-4 wires from the motor/EFI that needed connected to the truck. At that point most of them connected to stuff the old 2F left behind. To me it was easier to just piggyback the 3FE harness on the original FJ60 harness. IMHO it will lead to easier troubleshooting later in that the FSM for the FJ60 will take care of the body electrical and the FSM for the FJ62 will cover the motor.

Nick

Nick