mph signal & xfi?

[RICHIE HIGH PSI]

where does one get mph signal from ?
it use to work with my xfi to buick adaptor, now i have a complete fast harness, but i dont know where i get mph signal from.
Thanks

 

[d0n_3d]

Hi I'm doing the same thing. This is per Cal Hartline:

You can run your VSS to the XFI. Since it is 3 wires, I will ASSume it is a hall effect sensor. If so, run the signal to pin B on the VSS connector and jumper Pin A to Pin C. If it is IPU (magnetic) run the signal to Pin C and jumper Pin B to Pin D

 

[RICHIE HIGH PSI]

are the vss wires connected to the bulkhead under master cyl?

 

[Otto J]

If you using a stock speedo setup,youll have to find the wire behind the dash.
With a car like yours,I would put a driveshaft sensor(Cal sells 2 types)
The stock VSS will work but is not real accurate.
Measuring off the actual driveshaft is the most accurate way

 

[d0n_3d]

I bought a standard universal hall effect VSS sensor from Jegs for the 200-4R tranny. The sensor itself screws into the tailshaft of the tranny (where the manual speedo cable used to connect). This sensor supposedly converts to a digital signal right at the tranny. It has 3 wires coming from it (black negative, red positive, and white signal). I hooked all three wires to my aftermarket VDO speedo in the dash, and then tapped the white signal wire to the FAST VSS sensor harness PIN B and tied together wires A and C and didn't touch D. I'm assuming and hoping this is the correct way to get a proper MPH reading on my speedo and XFI.

 

[quickt]

you can also use TH400 VSS set up. It works real nice but its pricey.

 

[RICHIE HIGH PSI]

Once again Cal came thru for me!!
Got me set up and running again.
Best cust service and tech support...even after hrs.
Thanks again.

 

[HighPSI]

Thanks Richie! See you at Bradenton Saturday.