SLPhoenix92

Well here goes. I'll try to explain this right. I have a 92 firebird that had a V6 in it. I swapped it out for a 350 along with the wiring harness under hood. My problem is that the V6 did not require a VSS buffer but the V8 does. So my wiring under dash stayed the same. Since the v6 didn't have the buffer wiring I have no connector going to the ECM. My v8 has the purple and yellow wires coming from the vss to the ecm. How do I know where to connect the wires under the dash if I put a yellow buffer there, where to connect them to the ECM on the inside?

Tuned Performance

iTrader: (92)

What ecm is the v8 now ? Assuming you went from a 1227730 3.1 to ?

SLPhoenix92

I think it is a 122747.

SLPhoenix92

It's also a TBI.

Tuned Performance

iTrader: (92)

Didn’t expect a truck ecm,

Tuned Performance

iTrader: (92)

Vss to ip goes through c207 , ecm is pin A10.

SLPhoenix92

That's the ecm the guy who burns my chips said to use. The purple and yellow wires coming of the buffer to the ecm are what I don't have since the v6 didn't need them. So I need to know where to hook them up on the ecm. Thank you.

Tuned Performance

iTrader: (92)

B11 at the old ecm

SLPhoenix92

Thank you. I also need that pigtail or wire harness that comes off the buffer, haven't been able to find one since I don't have a part number.

Tuned Performance

iTrader: (92)

You can use a Dakota Digital sgi-100bt for calibration for tires or rear end ratio change. Or @firebirddude142 probably has a used pigtail.

SLPhoenix92

Are you saying that I need the old ecm to find the B11 pin?

Tuned Performance

iTrader: (92)

output from buffer to c207 pin K

SLPhoenix92

Thank you for all your help.

SLPhoenix92

I cannot find a wiring diagram to show me the pin location, color of wire or number location at the computer. Can you help?

Tuned Performance

iTrader: (92)

A10 of the 747 ecm
post 6

SLPhoenix92

I appreciate your help but that really doesn't tell me anything without a wiring diagram to tell me where those positions are at.

Tuned Performance

iTrader: (92)

where’s the guy who suggested this ecm ?buy a fsm, google the pinout.https://googlethatforyou.com?q=1227747%20pinout
Or actually look at the connection it has the letters on it 😆

SLPhoenix92

Thank you very much.

Tuned Performance

iTrader: (92)

747 read the post