Need some help on a trunk battery - Team Camaro Tech
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post #1 of 6 (permalink) Old Jan 30th, 10, 01:30 PM Thread Starter
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Need some help on a trunk battery

I have a cut off switch and ford solenoid all ready mounted in my camaro. I just need to wire it up. Here's my question, looking at the MAD wiring diagram, they are using a 8 gauge wire for the alternator. This is enough for a 100 + amp alternator? Please educate me on this. Thanks!!!!! A

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post #2 of 6 (permalink) Old Jan 30th, 10, 01:46 PM
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Re: Need some help on a trunk battery

your battery does NOT charrge through the main batt cable, it's with the 10 gauge wire going to the horn relay junction from your alt (see madds original chevy electrical diagram explaining how the engineers made the system work so well). You should install a jumper from the main batt cable on the starter to the crank terminal on the starter so the main cable only has power while cranking. TRUST ME... follow the Madd Electrical installation to the LETTER and you will be amazed. You should also have from 16 - 18 feet of 8 gauge wire going to the relay in the trunk so you have a slight voltage drop which makes the batt voltage a constant 14.2 @ your junction up front. Regardless of what I say, follow what they advise and you will never have a problem unless you have a single wire high amp alt, which are junk. You need an alt with remote voltage sensing capability to function correctly. Do yourself a favor and read ALL of Madds info... the picture will become very clear and you will be amazed!

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post #3 of 6 (permalink) Old Jan 30th, 10, 03:37 PM
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Re: Need some help on a trunk battery

MADD's diagram looks good.
You will have to run the purple/white wire from the OE starter harness to the Ford solenoid to get the starter to operate when commanded.
Make sure when you're done with the install, when you turn off the kill switch, the car is dead. Otherwise, it won't pass most racing governing bodies tech inspection.
I would use 2/0 AWG and run a separate ground cable from the block to the battery post.

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post #4 of 6 (permalink) Old Jan 30th, 10, 04:32 PM
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Re: Need some help on a trunk battery

Is that just a Ford solenoid (by battery) ???

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post #5 of 6 (permalink) Old Jan 31st, 10, 12:04 PM
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Re: Need some help on a trunk battery

Quote:
Originally Posted by DOUG G View Post
Is that just a Ford solenoid (by battery) ???
Yep, mount it close to the battery.

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post #6 of 6 (permalink) Old Jan 31st, 10, 12:41 PM
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Re: Need some help on a trunk battery

The MAD diagram shows a single wire alternator. There are a lot of reasons not to use a single wire. Personally I prefer the CS style and have a CS-130 in my car.

If you also decide to use a CS style, consider adding another wire from the remote sensing terminal to your terminal block where all the vehicle power wires connect to. This will do two things. First it well help maintain a nice steady regulated voltage for your vehicle power source. Second, it will make certain your battery gets adequate voltage to keep it fully charged.

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