Electronics Need help wiring something up? Thinking of adding an electrical component to your car? Need help troubleshooting that wiring glitch?

No power!

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Old Dec 19, 2020 | 07:05 PM
  #1  
micktroup's Avatar
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From: California
Car: 1991 Z28 Camaro
Engine: 5.7L V8
Transmission: auto
No power!

I need your help and direction, guys and girls...

Having had my car parked for several months, i’ve finally repaired the broken starter bolt, replaced the dead battery and... nothing.

Not only no start, I don’t have power to ANYTHING.

Now, i’ve checked the positive battery cable and I have 12V past the fusable link. I also had removed a rodent nest from the passenger side motor mount and found a wire with the connector missing and the fan sensor above it disconnected, so i wired in another connector and plugged it back in. I’m now not sure if that was the right place for that wire.

I have no power to the lights, the dash, pump- nothing.

I didn’t see any other chewed wires, but can someone direct me to where to look for the power interruption? Where does the power for the lights etc go through- the starter solenoid, directly to the harness?? There are three wires into the positive cable lug: direct to the starter, from the alternator, to a connector into some other wires.

Can someone PLEASE point me in the right direction?

Many thanks folks!
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Old Dec 19, 2020 | 09:50 PM
  #2  
T.L.'s Avatar
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From: Colorado USA
Car: '83 Firebird (T/A Clone)
Engine: 350 with L-69 components
Transmission: 700R-4, 2000 RPM stall converter
Axle/Gears: 10-bolt/3.73 ..
Re: No power!

You need to verify that the two red 10-gauge power wires from the C100 connector on the firewall are not damaged and are properly connected...
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Old Dec 19, 2020 | 10:25 PM
  #3  
micktroup's Avatar
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Joined: May 2005
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From: California
Car: 1991 Z28 Camaro
Engine: 5.7L V8
Transmission: auto
Re: No power!

Sorry for my ignorance- what’s the C100 connector?

Mike
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Old Dec 20, 2020 | 12:27 AM
  #4  
T.L.'s Avatar
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Joined: Sep 1999
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From: Colorado USA
Car: '83 Firebird (T/A Clone)
Engine: 350 with L-69 components
Transmission: 700R-4, 2000 RPM stall converter
Axle/Gears: 10-bolt/3.73 ..
Re: No power!

Originally Posted by micktroup
Sorry for my ignorance- what’s the C100 connector?

Mike
It's the plastic bulkhead connector on the driver-side firewall where the main engine and lights wiring harness goes through. Those two wires I mentioned connect to the post on the starter that the positive battery cable connects to. That is how the car gets it's power for everything.
Those wires have fusible links. Have you verified that they are in good condition?...
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