vehicle speed sensor wiring help

[karolko]

i am in the process of wiring in a autometer dash and i have converted into a electronic speedo which uses a hall effect sensor at the transmission to send a signal to the new speedo.

now my problem is that i now need to send that signal back out of the speedo and into the vss buffer, but which wire do i connect it to???

correct me if i am wrong, but the original vss on the back of the dash sent out a 16 pulse signal into the vss box, which then converted it into a 2pulse signal for the ecu? is that correct.


please help. i need to get this dash finished.

 

[karolko]

umm, what i really want to know is what each of the three wires are going to the light unit on the back of the speedo. they are green, red, and black. i think the red is 12v, black is ground, and green is the singal TO the vss buffer, but i would like a verification.

 

[GNVenom]

http://www.installationinstructions.com/FYI/vss-tech.pdf

Hope this helps.

 

[karolko]

John, thank you very much, this clears some things u, but i still do not know what to do.

the hall effect sender that i have bolted to the tranny is 16pulse/rev. now, your article states that the singal output sends out 2pulse/revoution into the buffer box.

so this is my problem. should i hook up my singal output into the green wire before the buffer box, or the brown wire after the buffer box??

 

[GNVenom]

If your sender is 16 pulse, it won't work directly. You will need:

Casper's Electronics, Inc.: VSS Convertor

This converter doesn't use the original VSS buffer. It's designed to interpret the signal directly from the sender, and convert it to a signal that the ECM uses.

You will need additional parts to get the cruise to work as well, since it also uses the 2 pulse signal.

 

[karolko]

crapola, so you are telling me there is no way i can get it to work without buying the casper's box??