Originally Posted by ES_97Sport
... Atlas t-case -

Gear Ratio: 10.34:1
Drop: Left hand drop (Driver Side)
Input Spline: 23 Spline short
Tailhousing: Standard Tailhousing (w/ speedo provission)
Speedometer: Electronic Speedometer Module
Rear Yoke: 1350 CV
Front Yoke: 1350 CV
Site Tube: Yes Please ....


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The Atlas 4-speed transfer case showed up last week with the electronic speedometer module included as ordered. The same part is available separately from AA under "300640 : TJ SPEEDOMETER HOUSING KIT".

TJ Speedometer Kit (PDF)

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Since I've already wired up one Dakota Digital SGI-5 for converting VSS signals and have all the appropriate documentation, I figured I'd get this documented so the guy doing the work wouldn't have to recreate the wheel.

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Advanced Adapters Electronic Speedo...ital SGI-5e for 1999 Montero Sport (PDF)

Dakota Digital is up to 'e' on their SGI-5. If I remember correctly, I used the SGI-5c when I did the NP231 swap into my black SAS'd 1997 Sport. From a wiring perspective, nothing has really changed there. I originally used Tera's VSS from their NP231 ultra-short SYE which will accept 12v, but Advance Adapters VSS only accepts 5v. That required a change in the wiring configuration. Not a big deal. If anything it makes it easier to understand. smile

Again, the plan is to located the SGI-5 under the console right behind the shifter where it's well protected and easy to get to when configuring. One hole through the floor with a grommet and a LOT of silicon sealer. smile

Code
Dakota Digital SGI-5e -> Mitsubishi Speedometer -

Male connector (SGI side):
A - Red			Power 12v DC (SGI - POWER)
B - Black		Ground (SGI - GROUND)
C - Yellow		Sensor Signal Out (SGI - OUT1 or OUT2*)

Female connector (Mitsu side):
A - Black/White		Power 12v DC (key switched)
B - Black		Ground
C - Yellow/White	Sensor Signal (to speedometer)


AA Electronic Speedometer (VSS) -> Dakota Digital SGI-5e -

Male connector (VSS side):
A - Orange		5v Sensor Power (SGI - SENSOR PWR)
B - Black/Blue		Sensor Ground (SGI - SENSOR GND)
C - White/Orange	Sensor Signal In (SGI - SIGNAL IN)

Female connector (SGI side):
A - Red			5v Sensor Power (SGI - SENSOR PWR)
B - Black		Sensor Ground (SGI - SENSOR GND)
C - Orange		Sensor Signal In (SGI - SIGNAL IN)

* If OUT1 doesn't work, use OUT2.


According to the Advance Adapter tech, there's another way to do this with different parts, but I KNOW this works well with the Mitsu speedometer and sends a reliable sensor signal to the PCM which is pretty important. smile

Now I have to figure out how to get the 2WD/4WD switch part working on an Atlas. smile

Edward

'97 Montero Sport LS 5-Speed 3.5L conversion
SAS Dana 44s & ARBs, 35" Yoko Geolandar M/Ts
NP231 B4R doubler/Terra Low231/RP 5.38 229:1
'99 Montero Sport Limited 4WD SAS 3-link project
'03 Montero Sport Limited AWD
'97 Montero Sport LS 5-Speed 4WD