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| Stripped AC wiring while dropping cradle (Page 1/1) |
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tnkgnr
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APR 11, 08:38 PM
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Dropped the cradle out of the car and the AC wiring was the casualty (forgot to disconnect). I know where the wire goes that I'm holding in the pic, but where does that larger one go that's stripped?
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theogre
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APR 12, 12:17 PM
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black wires are often Ground but not always.
You need to find the other end.------------------
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)
The Ogre's Fiero Cave
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Trinten
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APR 13, 03:57 PM
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theogre
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APR 13, 05:44 PM
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Also Ω meter to the block or frame read 0Ω can tell is likely a ground but still find other end to be sure.
Look at left front of engine bay too.
Is 1 black ground from engine to frame there and if this is it, likely find other 1/2 of the broken wire.
Is this is bad then is a "backup" return ground to the block and alternator.
Main ground is braided ground block to lid frame.
Main ground isn't neg battery cable or small wire to battery... That big cable mainly only return ground for the starter. Small wire if there does same thing as other small grounds.
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skywurz
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APR 13, 06:25 PM
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I don't think its ground the ac clutch wires tend to be black.
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olejoedad
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APR 13, 07:22 PM
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AC clutch wires are GREEN power and BLACK block ground.
Both are heavy gage on the Fiero.
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tnkgnr
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APR 14, 09:59 PM
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Thanks for the input guys.
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theogre
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APR 14, 11:45 PM
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If it is AC clutch wires...
The Plug to the coil have a diode to stop major back feed power surges that can blow ECM Radio and more.
Same reason many Car Relay coils have diode built into them but AC coil is way Way bigger that dumps 600+ volts and plenty of amps when coil is turn off. Enough to jump the AC Relay contacts to kill that and other things.
Very likely that diode broke too and must be replace.
Is why many "pigtail" for AC coil has the diode and wires connected.
Example: Dorman 85143 https://www.dormanproducts.com/p-20711-85143.aspx
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tnkgnr
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APR 17, 09:43 PM
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| quote | Originally posted by theogre:
If it is AC clutch wires...
The Plug to the coil have a diode to stop major back feed power surges that can blow ECM Radio and more.
Same reason many Car Relay coils have diode built into them but AC coil is way Way bigger that dumps 600+ volts and plenty of amps when coil is turn off. Enough to jump the AC Relay contacts to kill that and other things.
Very likely that diode broke too and must be replace.
Is why many "pigtail" for AC coil has the diode and wires connected.
Example: Dorman 85143 https://www.dormanproducts.com/p-20711-85143.aspx |
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Fortunately that one is still accounted for.
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