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Missing Portion of Wiring Harness

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Old Jul 7, 2021 | 05:40 PM
  #1  
Bandit_84_z28's Avatar
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Missing Portion of Wiring Harness

okay, I bought a 89 Iroc-z 5.7 TPI( engine was pulled years ago before I bough it) and was working on cleaning the engine bay for paint for the ls swap using a (Holly terminator max) and noticed I had no wiring to the wiper motor or to half of the bulkhead. any ideas on how important that part of wiring is for my application and ideas to wire wiper motor up?

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Old Jul 7, 2021 | 06:11 PM
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Re: Missing Portion of Wiring Harness

What I can tell you is the connector in question is called the "C100" connector, and it appears your missing the engine harness side of it (The wires that are there are going to the lights, yes?). This is the 1987 C100, I'm posting it to show you roughly what's in there, your 1989 may not be exactly the same so don't take this pic as gospel, more of a reference for the diagram you need (1989 VS 1987). A search here should turn it up somewhere......




Last edited by OrangeBird; Jul 7, 2021 at 06:17 PM.
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Old Jul 7, 2021 | 10:24 PM
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Car: Resto-Mod 1987 IROC-Z Clone
Engine: Alky fed L92 Vortec Twin-Turbo 6.8L
Transmission: My own built/ design 4L80M
Axle/Gears: Custom 12 bolt (4.10:1)
Re: Missing Portion of Wiring Harness

Most importantly...

The main Power-Distribution wires went through that C100 Bulk-Head Electrical Connector.
... this is power for the Head-Lamp Switch, Ignition-Switch, PNP/ Starter-Motor, Distributor/ Ignition-Coil, ETC...

Kind of Important!
Member: "John in RI" often has used-good Wiring-Harnesses for all different sections of the OEM Wiring for Third-Gens.
I would try and see if he has something you can use.

If not, you will have to get whatever you can find, and get help to re-Pin/ re-Terminate the C100 Connector.
I have a Thread that goes over some of the information to do so.
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Old Jul 8, 2021 | 03:43 AM
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Re: Missing Portion of Wiring Harness

Thanks guys, its a start in the right direction, ill have to try and find that member and see what he has
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Old Jul 8, 2021 | 08:49 AM
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Re: Missing Portion of Wiring Harness

I make new C100 harnesses for engine swap if you're interested
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Old Jul 8, 2021 | 02:13 PM
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Re: Missing Portion of Wiring Harness

Originally Posted by scooter
I make new C100 harnesses for engine swap if you're interested
I am interested, but I'm not sure what I need exactly,im looking at the diagram atm and I think all I need is A4,B4 C5 C6 C7 D5 D6(maybe)E5 F4 F7 G5 and (maybe G7 and G8)
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Old Jul 8, 2021 | 02:29 PM
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Re: Missing Portion of Wiring Harness

Originally Posted by Bandit_84_z28
I am interested, but I'm not sure what I need exactly,im looking at the diagram atm and I think all I need is A4,B4 C5 C6 C7 D5 D6(maybe)E5 F4 F7 G5 and (maybe G7 and G8)
I can help you figure that out
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Old Jul 8, 2021 | 02:47 PM
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Re: Missing Portion of Wiring Harness

Originally Posted by scooter
I can help you figure that out
I'll DM you once I get home
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Old Jul 17, 2021 | 11:21 AM
  #9  
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Re: Missing Portion of Wiring Harness

Originally Posted by scooter
I can help you figure that out
I need help finding one, scooter, you mentioned building one? Thanks, 1991 Z28
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Old Jul 17, 2021 | 04:20 PM
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Re: Missing Portion of Wiring Harness

@scooter is the man to go to. I'm in the process of him making me one
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Old Apr 13, 2022 | 10:00 AM
  #11  
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Re: Missing Portion of Wiring Harness

Originally Posted by scooter
I make new C100 harnesses for engine swap if you're interested
i am definitely interested in getting a harness built for the c100 can you dm me I tried to send you one but it would let me
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