86/87 LG4 ECM wiring harness
86/87 LG4 ECM wiring harness
Hello everybody,
I'm looking for a nice 86/87 ECM wiring harness.
No TPI but a LG4 carb harness with automatic transmission.
I already have the ECM and hope to find the right wiring harness overhere
Greetings Peter
I'm looking for a nice 86/87 ECM wiring harness.
No TPI but a LG4 carb harness with automatic transmission.
I already have the ECM and hope to find the right wiring harness overhere

Greetings Peter
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From: Ct
Car: 1989 Iroc, 1987and 1989 formula 350
Engine: 305tpi,350tpi,ls1
Transmission: 700r4,t-56
Axle/Gears: 3:08,3:27,3:23
Re: 86/87 LG4 ECM wiring harness
I have one out of a 1987 bird but it was a 5-speed..not anything different but the tranny part..
Re: 86/87 LG4 ECM wiring harness
Thanks for the fast replies!
I really need a wiring harness with auto or else my 4th gear will not activate.
@86blackiroc, do you know the ECM number that came with the wiring harness? I'm looking for a harness that should fit a 1228079 ecm. The wiring harness should also be fitted with a knock sensor and all the normal stuff for the E4ME Q-jet. Thanks,
Greetings Peter
I really need a wiring harness with auto or else my 4th gear will not activate.
@86blackiroc, do you know the ECM number that came with the wiring harness? I'm looking for a harness that should fit a 1228079 ecm. The wiring harness should also be fitted with a knock sensor and all the normal stuff for the E4ME Q-jet. Thanks,
Greetings Peter
Joined: Aug 1999
Posts: 5,273
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From: RI
Car: 1984 Camaro Berlinetta
Engine: LT1
Transmission: T56 6-speed
Axle/Gears: 4.11 LS1 Rear End
Re: 86/87 LG4 ECM wiring harness
$75 + Shipping

the 3 cut wires are for the Tranny plug you just mentioned. It's for the Knock sensor and EST Carb intake systems.

the 3 cut wires are for the Tranny plug you just mentioned. It's for the Knock sensor and EST Carb intake systems.
Joined: Sep 2007
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From: Fayette County, OH
Car: basic third gens
Engine: that I like
Transmission: to restore
Axle/Gears: and enjoy
Re: 86/87 LG4 ECM wiring harness
Mine has the plugs for the knock sensor and everything else related to the carb, but I don't know what the ecm number was. Mine also has the three tranny wires cut off and, unfortunately, they are MIA.
Re: 86/87 LG4 ECM wiring harness
Thanks for the two offers. I hope you don't mind if I wait a little longer to see if there is a 87 wiring harness for sale somewhere. I don't want to buy a wiring harness and cut it up to make it work. 
If somebody has a shopmanual with the identification for the 86 wiring harness then I can check if it's the same as a 87. Thanks,
Greetings Peter

If somebody has a shopmanual with the identification for the 86 wiring harness then I can check if it's the same as a 87. Thanks,
Greetings Peter
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