jaa1992

I'm dropping a 383 into my 92 and we have a wiring issue.

The wiring from the opti to the harness going to the ECM is my latest issue. The 92 has a squareish connector with 4 wires in it.
The original wiring harness from the opti to this connector is long gone.
I had a Dynaspark opti on it that required splicing the old connector to the harness from the Dynaspark. Tried to get the opti harness from chevy - its discontinued. Only harness available was from a 95/96 which has a different connector and wire color scheme.

I don't have my 92 FSM - its at the shop with the car so I don't know which wires are which on the 92 ECM connector. I don't have an FSM for the 95 or 96 to determine what wires are which.

Has ANYONE looked at this and figured out which color wires from the later opti harness match up with the wire colors for the old opti harness?

Thanks in advance!

vetteoz

92/93
http://www.lt1swap.com/pictures/100_1795.jpg

94/95
http://www.lt1swap.com/pictures/100_1775.jpg

http://www.lt1swap.com/all_lt1.htm

jaa1992

Thanks again!

I think this should be added to the stickies because its going to be more common now that the old style harness has been discontinued.

STL94LT1

http://www.eficonnection.com/eficonn...spx?ItemId=864

jaa1992

Wrong connector on the end that connects to the ecm harness.
I had to go to the 94+ harness from the opti because the new engine uses the second gen opti. The post above yours gave me the exact information I needed.