Hello out there, I have a 91' bird with a pontiac 400 and turbo 350. The bird was originally a v6 car and the ecm is history obviously, my ? is how do I wire the vss buffer box to the instrument panel,, I haven't even looked up under there yet, I could be very self explanitory,, but I'm new to this and want to make sure I do it right the first time. All the harnesses are still there, and I just got the buffer and have the plugs for that, just need to know what wires I need to splice and to where?? any help is greatly appreciated. Thanks

 

Get a look up under there already. It may still be wired correctly. You can remove the VSS from the trans and spin it by hand to see iff the speedometer is active.

 

well I got up under there today, and I'm not sure what wires to splice the buffer box into,, see from what I understand the 91 - 92 6 cylinder cars have the buffer built into the ecm. And looking under there that must be true. That's why I got the other buffer box along with the plugs and all the wires,, the one plug has two wires, wich go to the vss on the trans,, that I got,, the other plug has five wires, (black/white) ground, (brown) inst. panel, (red) cruise, (brown) ecm, and (pink/black) gauge. What I need to know is which of these I need to wire in, and where to? I still have the two plugs hanging under the dash from my ecm, haven't cut them at all, hopefully someone can help. I got all the other gauges and tach to work great, all I'm lacking is the speedo, thanks to anyone who can help.