I have a axle built for my 04 trd tacoma with push button 4wd shifter. If I'm correct there is a shift motor in my t-case to disconnect the front drive shaft and a shift motor in the front diff. I already made a control box with relays for my front elocker, but I am wondering if the wiring for the front add which will be removed could be used to control the elocker, all that would be needed is a switch to break the 12 volts or ground from the t-case motor going to the add plug? Any way There is a motor in my t-case correct havent looked to see if my drivshaft allways spins. That would suck if my front diff and logfeild were spining all the time!!! Some tacomas have a vacumm actuated add so this would not apply to them.