Help with alternator conversion (car won't shut off)... - Team Camaro Tech
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Electrical & Wiring Troubleshooting electrical.

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  #1  
Old Jun 8th, 02, 03:29 PM
ohayden ohayden is offline
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Well... I did the conversion that I found in the tech ref section: http://www.camaros.net/techref/ftecref14.html

I know I did not wire it wrong (at least not according to the tech ref). I wanted a cleaner engine compartment and I'm just so nit picky, so I removed the blue wire altogether, and re-routed the brown wire (just like the author of the tech ref). Anyways... to keep it simple... if I pull off the brown wire it works fine. If I have the brown wire connected then it won't shut off. I know the brown wire is a resistor wire that used for the gen light. I did not cut the wire whatsoever, just rerouted. I am running a complete MSD ignition setup. I'm using the 6A box with the MSD 3 coil. The alt is an Autolite PRO-TECH 7273. Could the alt have different terminals? Would it hurt if I try to put the brown wire on the #2 instead of the #1 terminal?

I knew of someone who had the same problem and they claim it was because of the MSD but I don't remember what they did to solve it.

Any help would be great!

Thanks,
Ohayden

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1968 Camaro (Week End Car)
1973 Camaro (Daily Driver)

[This message has been edited by ohayden (edited 06-08-2002).]
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  #2  
Old Jun 8th, 02, 06:15 PM
BTC BTC is offline
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If you converted to a single wire alternator I think you need to add a diode to one of you wires. The diode is like a one way valve for electricity. I had the same problem and the diode fixed it. It's been too long to rember which wire. Do a search or go to Mad Electronics, they have an explaination for this situation and will tell you what size diode you need.

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Old Jun 9th, 02, 04:39 AM
John_Muha John_Muha is offline
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It's caused by the alternator providing power to the MSD box after the key is off. Answer is a diode in the brown line. MSD now recommends a 400 volt 1 amp diode. Should be able to get one from Radio Shack.
Instructions are here:
Go to: http://www.msdignition.com/
Click on: Instruction Download
Click on: MSD 6 Series
Click on: MSD 6 Series Installation Instructions
Look on page 8.
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  #4  
Old Jun 9th, 02, 06:38 AM
ohayden ohayden is offline
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Great... that will be easy to fix. I read their install instructions and it's saying to use a 100v 1a diode with the band pointing towards the alt. So should I use a 400 or a 100 volt diode?

I will try it today! Thanks!

Ohayden

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http://www.350ss.com
1967 Camaro (Toy)
1968 Camaro (Week End Car)
1973 Camaro (Daily Driver)
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  #5  
Old Jun 9th, 02, 10:50 AM
John_Muha John_Muha is offline
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<BLOCKQUOTE>quote:</font><HR>Originally posted by ohayden:

Great... that will be easy to fix. I read their install instructions and it's saying to use a 100v 1a diode with the band pointing towards the alt. So should I use a 400 or a 100 volt diode?

I will try it today! Thanks!

Ohayden

<HR></BLOCKQUOTE>

Go with the 400 PIV diode. The 100 will work but some of their techs have been recommending a bigger size. If Radio Shack doesn't have a 1 amp, you can always go bigger (2 amp).

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  #6  
Old Jun 9th, 02, 12:53 PM
ohayden ohayden is offline
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Thanks BTC and John_Muha. That did the job. Radio Shack didn't have a 100 or 400 volt in stock so I got a 200 volt 1 amp diode and installed it and voila it actually turns off now with the key in the off position

Now my engine compartment looks cleaner and I now have an up-to-date alternator w/an internal voltage regulator. All around good deal!

Thanks again,
Ohayden

------------------
http://www.350ss.com
1967 Camaro (Toy)
1968 Camaro (Week End Car)
1973 Camaro (Daily Driver)
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