One wire feeds the compressor from the locker computer. Go to JY and find a mitsu diode with wire pigtails and a mitsu on/off dash switch to fit yours. Get some wire, and from an ignition hot source, run wire to switch and from switch to locker wire. Cut locker wire, install diode on the locker computer end set to allow current from computer to locker, and splice other diode wire to new switched wire and wire to locker. You can now engage locker in 2wd, or with that new switch off, and in 4wd (or whatever the oem system requires), you can engage the locker with the oem switch. The diode may not be required, but it will prevent backfeeding the locker computer.

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