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Old 01-01-2010, 01:13 PM   #1
780ripper
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wiring diagram

hi guys, i'm looking for a complete wiring diagram for a 1984 tbi system. the shop manuals i have available only cover basic wiring and don't show the ecu wiring. any help would be greatly appreciated.
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Old 01-01-2010, 01:16 PM   #2
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I moved this to the C-4 section so it will be seen better by guys that have that info. Unfortunaly my FSM is 87 specific so I can't help but I'm sure someone will be along shortly to help
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Old 01-01-2010, 01:34 PM   #3
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thanks for the help, i swapped out my 350 for a 454 and am in the process of rewiring everything without efi but i would like to keep the gauges and the in tank pump if possible.
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Old 01-01-2010, 05:26 PM   #4
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Quote:
Originally Posted by 780ripper View Post
d am in the process of rewiring everything without efi but i would like to keep the gauges and the in tank pump if possible.
Just remove and make safe anything on the engine harness that went to a EFI item.
The wiring for the pump relay and gauges stay along with the computer and wiring inside the car so your dash works as normal.
As your model did not have computer control of fans the fans should still work if you retained the fan switch in head
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Old 01-02-2010, 06:19 AM   #5
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did i mention that i sold the old engine and ecu and wiring . i guess not,so i'm left with most of the dash wiring that plugs into the ecu and various sending units off of the engine.. everything that passed through the firewall on the passenger side has been removed (unplugged, not cut). i am going to re run the fuel pump wiring through the ignition and through the relay with the addition of an e stop switch and use the stock fuse location. i'm hoping that most of the gauges will still work , if not there's a great article on retrofitting anaolg gauges on here somewhere.
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Old 01-02-2010, 06:54 AM   #6
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Quote:
Originally Posted by 780ripper View Post
i'm left with most of the dash wiring that plugs into the ecu i'm hoping that most of the gauges will still work
If you ditched the ECM you have lost the speedo,most of the gauges are direct feeds from sender to dash

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Originally Posted by 780ripper View Post
there's a great article on retrofitting anaolg gauges on here somewhere.
http://www.batee.com/corvette/dcrg/replace.shtml
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Old 01-02-2010, 08:12 AM   #7
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thanks, i love that article but not the choice of gauges, anyway i'm still going to need a wiring diagram so i'm off to the dealer to see what i can scrounge up.
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Old 01-02-2010, 05:17 PM   #8
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Quote:
Originally Posted by 780ripper View Post
i'm still going to need a wiring diagram .
Google works

84 ECM wiring and some 84 chassis stuff here

http://www.franken-us-buddys.de/inde...-%20Wiring.pdf
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Old 01-04-2010, 05:58 AM   #9
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great luck at my dealer, they had both the shop manual and a reproduction copy so i bought it. has everything on the car and more, huge schematic diagrams and wire numbers, i'm really impressed. thankf for finding that link above, excellent source of info!
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Old 01-04-2010, 03:24 PM   #10
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I put analog gauges in my car all Autometer. Not a hard job at all...way easier than that Batee article in my opinion. Let's see some pics of that Big block, I love the look of those big engines in the C-4


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Old 01-05-2010, 03:49 PM   #11
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got all kinds of info and color codes and wiring diagrams from the shop manual! as for the pics i'll take some and post them soon, it's cold here right now so the car is in storage.
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Old 01-05-2010, 04:16 PM   #12
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Old 01-05-2010, 04:17 PM   #13
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Wouldn't mind following your progress on the 454 swap.

Any pics, specifics on the project?
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Old 01-05-2010, 08:04 PM   #14
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geez....350's, 383's....454's...where does it END?

Guess theres never enough power
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Old 01-06-2010, 06:34 AM   #15
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i tried to post pics, but it won't let me, even in my profile, i get an error message, i think it has to do wit my computer.
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