I just got a Dakota Digital SGI-5B and I don't know where the VSS wire is on the ECM. I have a 1992 Z28 stock 700R4.
Honestly, I'm confused on how to hook it up. I've done a search and can't find a solution. Can any help?

 

On the VIN "F" & "8" models, there are four wires for the VSS that go to the ECM. They are as follows:

Pin "B9" purple wire (sensor ground)
Pin "B10" yellow wire (sensor input)
Pin "B11" gray wire (speed output 4000ppm)
Pin "C1" red wire (speed output 2000ppm)

 

Pin "B9" purple wire (sensor ground) in... from VSS
Pin "B10" yellow wire (sensor input) in... from VSS
Pin "B11" gray wire (speed output 4000ppm) out... to the speedo
Pin "C1" red wire (speed output 2000ppm) out... to the cruise control

 

Holy thread resurection!

I am having some problems getting my SGI-5B (push button) unit working.

I have all schematics for buffer box, etc.

I have mine wired as such.

SGI-5:
PWR 12V+ ---- to buffer box 12v+ (10A Gauges fuse, off w/ ign off)
Ground ------ to buffer box ground
VSS (yellow) -- to SGI-5B signal in
VSS (purple) -- to buffer box output signal gnd wire (purple - bypasses SGI-5)
SGI (out 3) -- to buffer box signal input (yellow)

Basically I bypassed the signal ground terminal in the SGI-5B, and just connecting the VSS signal ground (purple) to the buffers output ground wire (purple). Only the yellow wire from VSS makes it through SGI-5 and then on to buffer box. Is this wrong?

I get no reading on speedometer whatsoever. I get a solid green light on SGI-5B with ign on, not moving. Green light blinks when moving, but nothing on speedometer.

VSS is from a 93' T56. Car is an '88 TA with cruise, formerly an automatic.

Thanks for any input!

-Ryan

 

All,

Someone may find this helpful. I had mistakenly hooked up to the number 4 output on the SGI. With wire hooked up to number 3 output, unit works, speedo works.. and behold, so does the cruise control!!

I had dip switch settings 1-4, OFF, OFF, ON, ON. I was somewhere around COARSE setting number 7, FINE setting number 12.

I hooked up a 1000micro Farrad 35VDC cap across the power leads, but will still get noise when stopped every other light. Perhaps I will try a radio noise supressor as some had suggested. Radio shack 'store' no longer carries them.

One thing to note, is that when you go up or down a setting with push buttons, say going from 8 to 7 in the coarse range, the unit stops outputing a signal, until it is powered off and on. FAIRLY ANNOYING. But, it works and messah happy!