alternator wiring

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454cid

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If you mean a cs130 or an ad230 kind of alternator, most GM stock applications do not use the wire for sense unless the battery is remotely placed, in my experience, or the cable itself is just really long from alternator to charge point.
For example my buick park avenue did not use the sense wire because it was a short run to the box and battery, but a buick lesabre of 2000-2005 does because its under the back seat.

No, I'm talking 1960's 10DN applications being retrofitted with a 12SI. Your point is exactly what I find to be interesting. In the 60's voltage was an issue that needed to be solved, but later in the 90's and early 2000's it either wasn't an issue, or was solved differently. It could be the machanical regulators of the 60's were the issue, as I don't know when the wiring changed from the horn relay being the main distribution point. It might have been in the 70's with the introduction of the 10SI that was internally regulated.
 

GoToGuy

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Your 95 Sub' is probably similar to my 95 K2500 5.7 So maybe this will help with clarity. A few photos underhood. The upper red goes across the radiator support to fuse box. The lower heavier gauge in blue tube runs down to frame adel clamp then to silver insulation to starter. The green pointer wire runs up behind AC compressor to Alternator.
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GoToGuy

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The power wire run, green arrow,
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to main fuse box and where it connects to stud. The red ring terminal on firewall side of main fusebox.
 

GoToGuy

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Ground wires at battery. Main wire from battery ground to intake manifold bolt. Coming off same ground wire short run grounds to inner fender.
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eran tomer

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@GoToGuy thanks a lot.
those thin free wires with yellow ends are the fusible links?

i ordered couple of gm cables from gmpartsgiant and will fix the mess, maybe will remove those bus bars.

for the ground there is one cable to the fender and 2 connect to the cylinder block to a cover with 4 bolts.
to the intake manifolds studs there are 2 thin wires coming from who knows where.
 

eran tomer

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i bought this cable for the alternator according to gm part number.
is the thin wire with yellow end the so called fusible link?
 

GoToGuy

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That looks like the ground / negative cable; ring terminal on forward right intake manifold bolt to battery ground the short wire is for completing the bonding grounding. In the photo of the negative side next to the " E " in the Exide label smaller wire loops under to ring terminal under brown ( rusty ) bolt head in white backround. A GM or ACDelco positive wire should be red as shown on photo's. The ACDelco replacements i got for the Tahoe are correct fit and colors.
 

eran tomer

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maybe the photos are not real, but this is the part number.
can you give links to the cables you got?
 
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