Hotrodder

I have an electric speedometer that I'm not sure how to wire to my T56 trans,
It's an Aurora/AutoLoc speedometer. I know it's low quality China stuff, but that's what I have for now. The Auto Loc mounting instructions only show how to wire against a 3 wire hall effect sensor, but as far as I have understood, the T56 transmission don't have a hall effect sensor, just a 2 wire VSS sensor...?
Here's what their instructions says:



So how du I wire the two VSS wires to the Speedometer?
My suggestion:
-red wire from the speedo to +12V
-black wire from speedo spliced in 2 with 1 wire to ground and 1 to VSS.
-White wire from speedo to VSS.

Does it matter which of the two VSS wires that goes to ground? The VSS pigtail has GM correct yellow and purple wires.

I have tried the AutoLoc customer support, but they didn't understand my question at all. Is it me that's in the fog here?

The car is not a third gen Camaro/Firebird, by the way...

jmd

iTrader: (4)

It's still a hall effect sensor.

That would leave your VSS unpowered. A speedo isn't going to receive a valid signal by the Hall switching ground. See attached.

Doesn't matter; it will take + and signal out either way.
I believe it. Now that it's stopped raining here, probably. Yes it is.

Hotrodder

Ok, So do you mean I have to mount the hall effect sensor to the T56 transmission? Where does is mount?