BUILD POST EIGHT
Now some more technical stuff! As I stated earlier, I used a 2WD 4Runner ECU and wire harness because I wanted complete manual control of my transfer case. Being that the 100 series is full time AWD, and need to get a part time kit. I ordered and installed a part time spool from Mark's Off Road. The spool is extremely nice, and was very easy to install.
Very well made item:
How am I suppose to get any work done around here?
Mark's spool installed:
For those of you unfamiliar with the kit, it's still necessary to keep the center diff lock actuator. Normally this would be no big deal, bu I did not have the computer or switch (not that I would have used them anyway!). So time to experiment...
The inside of the CDL actuator has tracks on it that basically limit the amount of travel. Once they get to their limit, electricity no longer passes through and it stops. Using two relays, I was able to copy what the computer does. The biggest issue is that if you do not use the limits, the CDL will bind up and you have to unbolt it from the transfer case to reset it.
Here are a few pictures to show what I'm talking about....
Under side of CDL actuator:
The gear it drives with the 'jumpers':
Playing with switches:
I custom ordered all my switches. They are a wide array of on/off, on/off/on, momentary, single pole, double pole, single throw, double throw, etc. The one I got my my CDL is momentary on/off/on with an INDEPENDENT led light. I connected the led light in the switch to the position switch in the transfer case. So, when I press the button to lock my center diff (put the vehicle in 4WD), it will spin the CDL until it hits it's limit. At that point, it will have already engaged the gear, lighting up the light on the bottom of my switch. The opposite is true for disengaging 4WD
Here's a short video, probably much more clear than I can explain!