Transmission Shifting Alternative

So, more or less, we are out of luck on finding a wiring diagram for the TCM of this vehicle. after looked over the interenet, through blogs and forums, and even having peter contact dealers in japan with a translator, still no hope.

so we've decided to take an alternate route.

what we will do is use the 2 shifting solenoids that determine the gear position, and splice them into a 'manual switch' type method. its almost like a manual transmission, were u change the gears yourself, but using an automatic transmission.

to test to see if it even works, we got some light switches and used wire to splice onto each solenoid. there are 4 solenoids in total: 2 for swithcing gears, 1 for the lock up, and the other for line pressure?. we attached the first 3 to light switches that are positioned convinetl in the center consol of the trooper.

so technically what happens is, when both the switches are ON and/or OFF in a certain pattern, it determines the gear it switches to. this is a chart with the proper sequence for the trooper.

SWITCH 1 SWITCH 2 GEAR

ON OFF 1st

ON ON 2nd

OFF ON 3rd

OFF OFF 4th

after further testing, if everything goes well, we will purchase a shifter knob with all the gears (it looks like a real stick shifter) instead of using the light switches to change gears.