Battery Ground with fuse?? - Team Camaro Tech
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post #1 of 11 (permalink) Old Jul 10th, 11, 12:26 PM Thread Starter
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Battery Ground with fuse??

Hi guys, I was having a bit af a battery drain problem so went to go trouble shoot based on some of the forum posts I read. When following some of the wires to check my grounds I found a ground wire going from the positive terminal of the battery with a 40 amp in line fuse.... It is all melted at the connector (in the middle of the length of wire - not at the fuse).

Firstly, why would you ground a wire from the positive battery terminal? Secondly, if you should, then should I just cut out and splice (and/or replace) the wire that melted? something caused it to melt and I don't want to just ignore that.

I'm obviously far from an electrical expert so any help is appreciated.

Thanks!


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post #2 of 11 (permalink) Old Jul 10th, 11, 12:37 PM
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Re: Battery Ground with fuse??????

Are you sure it's going to ground and not to the plastic terminal block on the core support in front of the battery?

The factory battery cable pigtail that goes to the terminal block was a fusible link wire. Most replacement battery cables just use regular wire for the pigtail. Perhaps a previous owner realized that and added an inline fuse.


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post #3 of 11 (permalink) Old Jul 10th, 11, 01:07 PM Thread Starter
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Re: Battery Ground with fuse??????

Al, thanks, I think you are right, it is going to the plastic terminal block. Here is a pic just to be sure, but the description matches. Here is also a pic of the wire. Any clue if I should just repair the fried wire or will it just fry again because of whatever caused it.




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post #4 of 11 (permalink) Old Jul 10th, 11, 01:24 PM
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Re: Battery Ground with fuse??????

Repair it for sure. It supplies battery power to every circuit in the car except the starter motor, and is also the charge wire for the battery. Hard to say what caused it, but monitor it frequently would be my advice.


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post #5 of 11 (permalink) Old Jul 10th, 11, 01:29 PM Thread Starter
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Re: Battery Ground with fuse??????

Quote:
Originally Posted by BPOS View Post
Repair it for sure. It supplies battery power to every circuit in the car except the starter motor, and is also the charge wire for the battery. Hard to say what caused it, but monitor it frequently would be my advice.
Thanks Al! Hope it stops my battery drain too! Off to fix it now...


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post #6 of 11 (permalink) Old Jul 11th, 11, 08:33 AM
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Re: Battery Ground with fuse??????

I just cleaned up that section of my wiring, here's a post with pics that might help:


https://www.camaros.net/forums/showthread.php?t=189627

Make sure not to hard wire it...

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post #7 of 11 (permalink) Old Jul 11th, 11, 12:04 PM Thread Starter
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Re: Battery Ground with fuse??????

Quote:
Originally Posted by r_w View Post
I just cleaned up that section of my wiring, here's a post with pics that might help:


https://www.camaros.net/forums/showthread.php?t=189627

Make sure not to hard wire it...
R w, sorry, what do mean with "don't hard wire it"?


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post #8 of 11 (permalink) Old Jul 11th, 11, 01:30 PM
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Re: Battery Ground with fuse??????

Quote:
Originally Posted by Andrew68 View Post
R w, sorry, what do mean with "don't hard wire it"?
I think he is referring to the connection. You should always use a fusible link, not a direct "hard wired" wire with no protection from overload.


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post #9 of 11 (permalink) Old Jul 11th, 11, 01:46 PM
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Re: Battery Ground with fuse??????

Quote:
Originally Posted by 69-Pace View Post
I think he is referring to the connection. You should always use a fusible link, not a direct "hard wired" wire with no protection from overload.
Exactly. A fusible link right at the battery will act like a slow blow fuse. If you just fuse it, the fuse will blow when current spikes under normal conditions.

The fusible link protects the car if the main battery wire shorts out (rub the insulation off going through a firewall, etc). If there is no protection, something has to give. You then have direct shorted your battery through that wire. The wire will heat up quick, melt, with lots of sparks. Sometimes the wire gives up first and burns in two, sometimes the car can burn...

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post #10 of 11 (permalink) Old Jul 11th, 11, 02:23 PM Thread Starter
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Re: Battery Ground with fuse??????

Quote:
Originally Posted by r_w View Post
Exactly. A fusible link right at the battery will act like a slow blow fuse. If you just fuse it, the fuse will blow when current spikes under normal conditions.

The fusible link protects the car if the main battery wire shorts out (rub the insulation off going through a firewall, etc). If there is no protection, something has to give. You then have direct shorted your battery through that wire. The wire will heat up quick, melt, with lots of sparks. Sometimes the wire gives up first and burns in two, sometimes the car can burn...
Got it! Thanks for explaining!!!! thats what I did... Not because I knew what I was doing, just because I replaced exactly what was there and it was (based on the description) a fusible link... The connector between the two wires had totally melted so I guess that means it worked as intended! Let's just hope it doesn't happen again now!


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Last edited by Andrew68; Jul 11th, 11 at 02:37 PM.
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post #11 of 11 (permalink) Old Jul 11th, 11, 03:09 PM
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Re: Battery Ground with fuse??????

Excellent. Sweet ride, as well...

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