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Electronics Need help wiring something up? Thinking of adding an electrical component to your car? Need help troubleshooting that wiring glitch?

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Old 07-13-2009, 11:20 AM   #1
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Positive Battery Cable - help'a brutha out!

Hey Guys n Gals -

I am wiring up my car for it's first breaths of life (project car going on 5 years now).

Because the car had no engine to start with (just a shell), I don't have a reference here. I'd like to see if someone can tell me where some cables go - should be easy.

So - the thick part of positive battery cable should go directly to the starter, correct?

I believe there should also be a small (10-14 gauge) wire that comes from the terminal to a small junction block near the battery. From that location, what cables come off, and where do they go?

Thanks, everyone!
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Old 07-15-2009, 10:40 AM   #2
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Re: Positive Battery Cable - help'a brutha out!

Anyone?

Bueller?
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Old 07-15-2009, 12:30 PM   #3
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Re: Positive Battery Cable - help'a brutha out!

[quote=RedOctober;4218802]So - the thick part of positive battery cable should go directly to the starter, correct?
QUOTE]

Yes. The smaller lead should go through a fusible link to the ECM power lead that runs along the pass fenderwell.
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Old 07-15-2009, 01:15 PM   #4
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Re: Positive Battery Cable - help'a brutha out!

[quote=naf;4221153]
Quote:
Originally Posted by RedOctober View Post
So - the thick part of positive battery cable should go directly to the starter, correct?
QUOTE]

Yes. The smaller lead should go through a fusible link to the ECM power lead that runs along the pass fenderwell.
Cool thanks. One thing - I forgot to state that this is an EFI to carb swap, so there is no ECM anymore.

So that fusable link to the junction post - what connects to that?

Also - how would one make a fusable link (what gauge wire, and/or in-line fuse would I use?)?

thanks everyone...
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Old 07-15-2009, 02:24 PM   #5
naf
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Re: Positive Battery Cable - help'a brutha out!

If the ecm is gone you won't need to connect it.
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"A man who voluntarily drives a car like that and still manages to maintain such impervious confidence that it will faithfully start the next time he turns that key is an encouragement for us all to take greater risks in life."

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Old 07-15-2009, 02:26 PM   #6
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Re: Positive Battery Cable - help'a brutha out!

OK - so what else connects to that junction post? I'm guessing some wire needs to go from there to the alternator and/or fuse box. Anyone know the specifics (where the wire connects to, what color, what guage)?

Thanks, naf!
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Old 07-15-2009, 05:32 PM   #7
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Re: Positive Battery Cable - help'a brutha out!

Sorry forgot about the alternator connection. I'm out of town at a school for work and getting distracted. Your alternator wire should come out of that splice. All other power should come from the battery post, although I dimly recall some models may have pulled power for the rad fans from the battery? What model?
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Old 07-15-2009, 05:54 PM   #8
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Re: Positive Battery Cable - help'a brutha out!

Thanks naf... it's an 88 SC that I've turned into a carb setup (it was a 305 TBI).

One more question - it sounds like the main power to the under dash fuse box should come out of that junction box - what color should that one be?

I have to make the cable going from the battery to the junction post (passenger fender) - what cable type/size should I use?
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Old 07-15-2009, 06:32 PM   #9
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Transmission: 700-R4
Axle/Gears: 3.27 9-bolt

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Re: Positive Battery Cable - help'a brutha out!

Quote:
Originally Posted by RedOctober View Post
Thanks naf... it's an 88 SC that I've turned into a carb setup (it was a 305 TBI).

One more question - it sounds like the main power to the under dash fuse box should come out of that junction box - what color should that one be?

I have to make the cable going from the battery to the junction post (passenger fender) - what cable type/size should I use?
Can't help on the wire color/size for that one. Sorry.
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Old 07-15-2009, 06:32 PM
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