so i put a diff lock 5speed dual into my 89 gl-10 4speed auto wagon, and i have about 20-30 wires coming from the car and like 8-9 wires coming from the trans, any body got a clue on how to mate them, and also how do i wire the diff lock, i have the switch and all the vacuum stuff, and wires coming from both, but dont know what to hook to what?????

i think after you jump the two wires (one from ecu and one from tcu to tell ecu its a MT car) you shouldnt need to hook up an of the ecu -->tcu wires..........am i wrong in this assumption?

 

~Josh~

i think after you jump the two wires (one from ecu and one from tcu to tell ecu its a MT car) you shouldnt need to hook up an of the ecu -->tcu wires..........am i wrong in this assumption?

 

~Josh~

As far as I know, The ECU doesn't care what transmission the car has. Only jumpering that needs to be done is on the plug that goes to the automatic shifter. And thats to diasble the neutral safety switch.

 

I never got around to hooking up the reverse lights or the diff lock light on the dash when I did my FT4wd swap.

 

The difflock switch is a lot easier than it looks. IIRC, it has 5 wires. Only 3 are needed to make it work. I don't have the color codes handy, but its one (switched) power in and 2 power out. ech of the power outs go to one of the vacuum solenoids that mounts behind the driver side strut tower. the other 2 wires on the solenoids are simply gorunds.

 

There are 2 vac lines out from the solenoids. they go to the vac diaphram on the side of the trans. Its ok if you hook the wrong power to the wrong solenoid, or the wrong vac line to from the solenoid to the trans.. that will simply reverse the on/off process of the difflock (you will know it the first time you try to turn).. if its backwards, just swap the vac lines from the solenoids to the trans.

 

The solenoids are fed vacuum from the white canister on the passenger side between the strut tower and the fire wall.

 

Its really a lot easier than it looks. If I get some time tomorrow evening, I will dig out the FSM and list some wire color codes for you.