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

1994/1995 harness interchangable?

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Old Oct 27, 2007 | 06:53 PM
  #1  
JooneJune's Avatar
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1994/1995 harness interchangable?

v6-v8 swap...

It's a 1995 3.4L chasis.

1994 LT1 Engine (to PCM) harness
1994 Dash harness (3.4L 5.7l shouldnt make a difference)
1995 engine fusebox/wires (untouched from the 3.4L)

Do i need to change anything else out? I've herd I need the engine fusebox/lights/ect harness that runs through the drivers side shock tower is this true? It should be the same...shouldn't it...

thanks guys.
Old Oct 27, 2007 | 07:20 PM
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From what I've looked up:
The "problem" is with the dual fan's. There is no wire/relay for them.

-Anyone have a quick how-to to get these fans going?
-are there other differneces between the '94 and '95 fuse/relay/front harness I should know about?

lol... or is that all BS? lol
Old Oct 27, 2007 | 07:36 PM
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94-95 is a tricky swap, the dash harness needs to match the engine harness for a plug in swap
Old Oct 27, 2007 | 07:57 PM
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my dash harness matches my engine harness, but what im worried about is the underhood fusebox.

i need to "fix up" a wire/harness and run them from the fans to the pcm...

what do you mean the engine/dash harness need to match up? like 1994 engine harness 1994 dash harness right? (in my 1995 chasis...) I am removing the 1995 dash harness...
Old Oct 27, 2007 | 09:56 PM
  #5  
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Your probably going to need some wiring diagrams to make sure you have all the needed inputs. Even the 94 and 95 LT1 engine and fuse box harnesses are not the same.
Old Oct 30, 2007 | 04:38 PM
  #6  
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lol, you had to see how neat the '95 harness was compaired to my 1994 harness.

I had them both sprawled out on two seperate tables, there was a buttload of wires lol.
Def. different in the c100 c105 ect, I had to work my way around the aftermarket alarm cluster f^!k

Anyone know where I can find a diagram for the brake light clicky thingie with the 4-5 wires? (illuminates the rear break lights when you apply the break peddle)

I hope I connected the "missing parts" correctly, I would still like a 1994 dash harness diagram if anyone know's where to find one. (Shbox?)

thanks for hangin there with me guys, i can't wait to get it started.
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