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Ground on battery Positive Wire

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Old Apr 7, 2022 | 01:49 PM
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Default Ground on battery Positive Wire

So here's my new challenge on my 76 Corvette that has apparently a 69 350 engine in it.
The car started perfectly every time I tried it. Yesterday battery was dead. Went to charge battery and its pooched. So went to put in a new battery and got a huge spark when putting on the positive wire. So I tested the positive wire and found out I have a 'ground' to the positive wire. Traced wire back to starter and its perfect, no short. However on the solenoid which is mounted on the starter where the "main battery" wire is connected there are 2 small wires that come off that are on the same post as the main battery wire. There is s short in those 2 wires somewhere. On my car, the 2 wires are joined together, (one black and one red), I cut each wire and discovered they both have a ground on them too. Where do these 2 wires from the Solenoid go?

I have a service manual but can't find anything. Any help would be appreciated!
Andre
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Old Apr 7, 2022 | 02:12 PM
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How exactly are you determining you have a ground on the positive?
A ground on the positive would either melt a wire, blow a fuse, or blow a fusible link.
You are supposed to connect the positive wire first than the negative.
At the very least you have the door open when replacing the battery, a clock, and possibly a aftermarket radio, all drawing power.
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Old Apr 7, 2022 | 02:32 PM
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One on the solonoid is from the ignition switch and the other go's to the ignition at the distributor. As said above, a bat would fry either if they were a source of ground.

Dom
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Old Apr 7, 2022 | 02:59 PM
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Are you using 'Continuity' to test for ground? As others have said....you can have 'continutity' to ground THROUGH 'appliances' bulbs and etc. You may be testing the wrong leg of the circuit.

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Old Apr 7, 2022 | 03:00 PM
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Perhaps a bad diode just went kaput in the Alt.
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Old Apr 7, 2022 | 03:14 PM
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YUP! feeding back across the one-way check valve! (DIODE(s)
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Old Apr 7, 2022 | 03:40 PM
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Originally Posted by L-46man
YUP! feeding back across the one-way check valve! (DIODE(s)
So what are the O.Ps options and how to double check before throwing parts at it?
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Old Apr 7, 2022 | 03:53 PM
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unhook the big wire from the alternator. if ground is gone, alt is gone...
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Old Apr 7, 2022 | 03:54 PM
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Originally Posted by HeadsU.P.
So what are the O.Ps options and how to double check before throwing parts at it?
Fix the wires that were cut.
Disconnect the alternator.
Connect the positive cable.
Connect the negative cable,
Google how to test a bad diode.
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Old Apr 7, 2022 | 04:26 PM
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Well I guess I should have done more research! The battery terminals on the battery were were on backwards, thus the continuity on the positive wire! Dear lord! Back to basics. Check your work!
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Old Apr 7, 2022 | 04:37 PM
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Originally Posted by Andred1971
Well I guess I should have done more research! The battery terminals on the battery were were on backwards, thus the continuity on the positive wire! Dear lord! Back to basics. Check your work!
you may now really have a problem with your alternator if the diodes blew from the reversed cable's
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Old Apr 7, 2022 | 04:46 PM
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I believe the two wires on the battery cable stud, one goes to the fuse block and the other is the charge wire for the alternator?
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