LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Fuel Injector Wiring Help---Please!!

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Old Jun 22, 2003 | 07:36 PM
  #1  
mcmb's Avatar
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Fuel Injector Wiring Help---Please!!

Ok, I did a search and I can't find the info. The situation is, when I got the 93 Z-28 for the Lt1 swap the previous owner had already removed the engine wiring harness. I have the harness and got everything hooked up ok except I am not sure which injector plug-in connector goes to which injector. Now, it is pretty obvious which pair of connectors goes to which pair of injectors, but that still leaves a 50/50 chance on each pair. I noticed that the connectors have a marking of "PED" and a number. The number is not the same on each one so I am wondering if someone with a 93 can check theirs and let me know which "PED" number goes where? I do have a wiring diagram but it states different color wires for each injector and they are ALL the same pair of colors on the car! Any help with this, PLEASE.
Old Jun 22, 2003 | 08:04 PM
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1993s are batch fire. I'm pretty sure that as long as you can tell the left side from the right, other than that, it does not make any difference where they are plugged in.
Old Jun 22, 2003 | 08:33 PM
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So, for the 93, as long as I have all the drivers side connectors on the drivers side, and all the passenger side connectors on the passenger side, it will work?? (Or am I mis-understanding what you said)? If that's right it's ready to go!!
Old Jun 22, 2003 | 08:37 PM
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Oh, and MUCH thanks to ShoeBox for the Great web-site! It was a LOT of help during this swap!!
Old Jun 22, 2003 | 08:42 PM
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Originally posted by mcmb
So, for the 93, as long as I have all the drivers side connectors on the drivers side, and all the passenger side connectors on the passenger side, it will work?? (Or am I mis-understanding what you said)? If that's right it's ready to go!!
That's the way I understand it. I was hoping a second opinion would be posted.

Even if you get the connectors mixed up on the sequential FI cars, it will still run. I would not let this stop you from firing the car up.
Old Jun 23, 2003 | 01:06 AM
  #6  
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You are correct Rob..... there is only one lead from the 1993 ECM for the driver's side injectors, and another one lead from the ECM for the passenger side injectors. The single lead splits into 4 plugs for the injectors on that side of the engine, so it does not matter which plug is on which injector, as long as they ar all for the driver's side or passenger side.
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