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Fuse box disconnected wire

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Old 08-16-2017, 09:49 PM
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Fuse box disconnected wire

So just yesterday I picked up a 1986 Iroc Z! It started and ran fine yesterday then today I tried to start it after checking fuses and noticed an orange wire that is completely off after pulling the fuse box down. Guessing that it's the culprit but am not sure where it goes. Help is much needed! Also have a plug with an orange wire that got disconnected when I pulled it down. Ir runs with a pink wire with a black stripe another orange wire and a white wire.
The end of the orange wire.
Traced it going back to the left of the steering column if you're laying under it.

Last edited by Wyomaro; 08-16-2017 at 09:51 PM. Reason: More details
Old 08-17-2017, 12:44 AM
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Re: Fuse box disconnected wire

You pulled the fuse box and THEN it wouldn't start? If it helps any I'll get under my car tomorrow and see if I can find what matches up
Old 08-17-2017, 12:54 AM
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Re: Fuse box disconnected wire

Originally Posted by LiveIt!
You pulled the fuse box and THEN it wouldn't start? If it helps any I'll get under my car tomorrow and see if I can find what matches up
​​​​​​​yeah that would help immensely if you don't mind
Old 08-17-2017, 12:55 AM
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Re: Fuse box disconnected wire

And yeah right after I pulled the fuse box down. If you wouldn't mind it would be immensely appreciated!
Old 08-17-2017, 07:39 PM
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Re: Fuse box disconnected wire

Alright man I just checked under my dash, the only orange wires that size that run into my fuse box go to LID and the thermal breaker for the power windows, BUT an orange wire that size DOES run out of a wire loom by the fuse box and into a black plastic plug in connector on the wall of the car (if you're facing the steering wheel it's to your left near the fuse box.) I'm not sure what it controls but might be where it popped out of and controls something important? Best of luck
Old 08-17-2017, 07:43 PM
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Re: Fuse box disconnected wire

Just FYI the connector is RIGHT above where the grey plastic trim piece with the carpet glued to it ends (might not be grey cuz it matches ur interior and mine's grey )
Old 08-17-2017, 07:56 PM
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Re: Fuse box disconnected wire

Edit-somebody ziptied those wires together, so it doesn't look the same as my car. Purple and black wires go to important things like ENG CTRL, Fuel Injection and GAUGES, orange looks like it goes to less important things. What happens when u try to start the car? Do you think u can grab a pic of the back of your fuse box? Thanks
Old 08-17-2017, 08:52 PM
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Re: Fuse box disconnected wire

Here is the back of the fuse box
​​​​​​​
Old 08-17-2017, 11:07 PM
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Re: Fuse box disconnected wire

A pic of the bottom of the fuse box
The plug with no connection

This is kind of suspicious idk what was here before but it's not there now.
​​​​​​​
Old 08-17-2017, 11:15 PM
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Re: Fuse box disconnected wire

Back of the fuse box
Mystery plug sure it has a place but don't know where
Another fuse box pic
Board behind the fuse box
This is suspicious not sure what was on here.
​​​​​​​
Originally Posted by LiveIt!
Edit-somebody ziptied those wires together, so it doesn't look the same as my car. Purple and black wires go to important things like ENG CTRL, Fuel Injection and GAUGES, orange looks like it goes to less important things. What happens when u try to start the car? Do you think u can grab a pic of the back of your fuse box? Thanks
Old 08-17-2017, 11:28 PM
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Re: Fuse box disconnected wire

Here are a few pics of the fuse box


Bottom of fuse box



Mystery plug not sure where it was before



Another shot of the mystery plug coming to the fuse box



Little panel behind the fuse box



This is suspicious not sure what was here before but nothing is on there now.
Old 08-18-2017, 08:18 PM
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Re: Fuse box disconnected wire

You obviously have some aftermarket electrical items installed in your car (gauges, alarm, remote starter, stereo, etc).
What are they?
My bet is that orange wire needs to have +12 volts on it. But before you try doing that, what is not working that was before?
That orange wire looks like it had a poorly done crimped spade connector on it, and it fell off at some point. If so, it could have been plugged into the empty red tap-in connector on the pink wire.
Also check your door pin switch. That orange wire might have been connected there.
Old 08-18-2017, 08:29 PM
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Re: Fuse box disconnected wire

We have no power coming in on the purple with white wire at the 3 amp crk fuse. So we jumped power to it and the car would crank but wouldn't start.
Old 08-18-2017, 08:40 PM
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Re: Fuse box disconnected wire

Originally Posted by NoEmissions84TA
You obviously have some aftermarket electrical items installed in your car (gauges, alarm, remote starter, stereo, etc).
What are they?
My bet is that orange wire needs to have +12 volts on it. But before you try doing that, what is not working that was before?
That orange wire looks like it had a poorly done crimped spade connector on it, and it fell off at some point. If so, it could have been plugged into the empty red tap-in connector on the pink wire.
Also check your door pin switch. That orange wire might have been connected there.
My guess is that there is a starter kill relay hidden somewhere, and that disconnected orange wire goes directly to it. Trace it further.
Old 08-18-2017, 08:43 PM
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Re: Fuse box disconnected wire

Just got it started actually trying to figure out why that purple/white wire has no power...
​​​​​
Old 08-18-2017, 09:09 PM
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Re: Fuse box disconnected wire

Still no power to the small purple/white wire on the crk fuse. So applied power to the other side and started the car.
Old 08-19-2017, 12:08 AM
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Re: Fuse box disconnected wire

Again, I bet that there is a hidden (to you) starter kill relay in there.
And the contacts of the relay are interrupting power in that purple wire.
I bet that the orange wire connects to +12 volts, going to the relay's coil.

If you do decide to apply +12v to that orange wire, make the car as quiet as possible (pull the buzzer out, turn blower fan off, etc) and if there are no big sparks, then you should hear the click of the relay and you should be able to follow the clicking sound to its location.
Old 08-22-2017, 04:08 PM
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Orange U Glad ?

The orange wires at the fuse block are associated with the accessory circuit.

The ACC circuit powers the BATT terminals, BOSE amp relay, Horn relay, Underhood light, Hatch release relay, Dome light, Map lights, Lighter, Outside mirror switch and Door lock switches.

Other
orange wires pass power to the Convenience Center.

So if that block hasn’t been altered that circuit cannot give you a no-start problem.


Happy Racing !



After The Fourth Barrel Roll I Lost Control Of The Car

Old 08-23-2017, 02:38 AM
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Re: Orange U Glad ?

xxx

Last edited by NoEmissions84TA; 08-23-2017 at 02:39 AM. Reason: hit the save button too quickly
Old 08-23-2017, 02:40 AM
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Re: Orange U Glad ?

Originally Posted by NINÅ
The orange wires at the fuse block are associated with the accessory circuit.

The ACC circuit powers the BATT terminals, BOSE amp relay, Horn relay, Underhood light, Hatch release relay, Dome light, Map lights, Lighter, Outside mirror switch and Door lock switches.

Other
orange wires pass power to the Convenience Center.

So if that block hasn’t been altered that circuit cannot give you a no-start problem.


Happy Racing !



After The Fourth Barrel Roll I Lost Control Of The Car

100% true for factory stock wiring. He has some non stock wiring added.
Old 08-23-2017, 02:53 AM
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Re: Fuse box disconnected wire

So i've got a new problem not related to my last the reverse lights turn on and off whenever they feel like it when the car is running. What could be the cause of that?
Old 08-23-2017, 02:57 AM
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Re: Fuse box disconnected wire

If automatic transmission, there is a big black multifunction switch attached to the right side of the shifter. Start there looking for problems.




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