A post a few months ago got me thinking on how to replace the locker ECU or for those who are retrofitting eclectic lockers and don’t want to spring for any more EOM parts, there is a kit you can get online for such but I have worked with this kit and it stinks.
I came up with this, shown below will control one locker, you would need another mirror image of into control a second Toyota electric locker, it works in theory, and should work in reality but I have not tried it and have no intensions of doing so. You loose some of the subtleties of the Toyota ECU like engagement only at certain speeds, front rear lockers only after CDL** , rear first etc, it is also not compatible with the factory rotary knob.
the motor and limit switch are part of the actuator, you will need a SPDT control switch, 2 relays with NO and NC connections, a fuse and interconnecting wire, the light is optional, and basically replaces the blinking stage of the factory ECU, you would also wire the cluster lights to the indicator switch on the actuator (not pictured)
Your extra light would come on when the switch is put to the lock position, the motor will load the wait springs to the locked position and then shut off, when the dog teeth of the locker lien up the springs will engage the locker and the cluster lights will light, unlock is the reverse of lock.
I have not figured out polarity of the limit switch and motor someone who is doing a retro fit will have to do that, you will probalby need a locker out of the vehicle to do so, but other than that the design should be ready.
**PS you could possibly get this function by grounding the limit switch through the CDL indicator switch, unfortunaly this would inhibit both lock and unlock so you would want to make sure you unlock the axle before you unlock the center.
schematic shown in the unlocked position
I came up with this, shown below will control one locker, you would need another mirror image of into control a second Toyota electric locker, it works in theory, and should work in reality but I have not tried it and have no intensions of doing so. You loose some of the subtleties of the Toyota ECU like engagement only at certain speeds, front rear lockers only after CDL** , rear first etc, it is also not compatible with the factory rotary knob.
the motor and limit switch are part of the actuator, you will need a SPDT control switch, 2 relays with NO and NC connections, a fuse and interconnecting wire, the light is optional, and basically replaces the blinking stage of the factory ECU, you would also wire the cluster lights to the indicator switch on the actuator (not pictured)
Your extra light would come on when the switch is put to the lock position, the motor will load the wait springs to the locked position and then shut off, when the dog teeth of the locker lien up the springs will engage the locker and the cluster lights will light, unlock is the reverse of lock.
I have not figured out polarity of the limit switch and motor someone who is doing a retro fit will have to do that, you will probalby need a locker out of the vehicle to do so, but other than that the design should be ready.
**PS you could possibly get this function by grounding the limit switch through the CDL indicator switch, unfortunaly this would inhibit both lock and unlock so you would want to make sure you unlock the axle before you unlock the center.
schematic shown in the unlocked position
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