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"Battery" wire on the alternator - 70 Cuda 440
#295935
04/22/09 01:28 AM
04/22/09 01:28 AM
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Joined: Nov 2004
Posts: 227
Scottsdale, AZ
Cudalord
OP
enthusiast
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OP
enthusiast
Joined: Nov 2004
Posts: 227
Scottsdale, AZ
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I'm trying to clean up my rats nest of wires, and redoing all the connections with solder and heat shrink connectors. Ran into a few blocks, any help is appreciated as always.
1. Question about the black wire coming from the bulkhead that runs to the battery side of the alternator. I put the test light to the female plug on the firewall bulkhead where the black wire plugs into, and power is always "HOT" coming OUT of the firewall - even with key out of the ignition. This seems odd to me as from my understanding, the BAT side of the alternator is the output. Can anyone confirm?
2. Does anyone have a simple diagram of the ignition wiring, including the alternator with electronic ignition/module? The splices are throwing me off a little here. I checked the electric section in the Tech area, but didn't see any complete wiring diagrams.
3. MY voltmeter broke, but when I put my test light on the IGN2 side of the ballast, the light was dim, on the IG1 side it was a solid bright. Is this normal?
Hope these questions make sense. I just spent a couple of hours in the garage trying to figure this out with my manuals and needed a breather.
Thanks!!!
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Re: "Battery" wire on the alternator - 70 Cuda 440
[Re: Cudalord]
#295936
04/22/09 01:41 AM
04/22/09 01:41 AM
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Anonymous
Unregistered
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Anonymous
Unregistered
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What you found is normal. The ign switch readings are low on the "run" side caused by the ballast resistor, and the BAT connection for the alternator is always hot Here's a partial list of some Mopar wiring diagrams http://www.mymopar.com/66to71_wiring.htm
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Re: "Battery" wire on the alternator - 70 Cuda 440
[Re: Cudalord]
#295937
04/22/09 03:44 AM
04/22/09 03:44 AM
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Joined: Dec 2007
Posts: 7,759
So Cal
HealthServices
Why would you even post that?
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Why would you even post that?
Joined: Dec 2007
Posts: 7,759
So Cal
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Quote:
I'm trying to clean up my rats nest of wires, and redoing all the connections with solder and heat shrink connectors. Ran into a few blocks, any help is appreciated as always.
1. Question about the black wire coming from the bulkhead that runs to the battery side of the alternator. I put the test light to the female plug on the firewall bulkhead where the black wire plugs into, and power is always "HOT" coming OUT of the firewall - even with key out of the ignition. This seems odd to me as from my understanding, the BAT side of the alternator is the output. Can anyone confirm?
Normal Do not cut
Quote:
2. Does anyone have a simple diagram of the ignition wiring, including the alternator with electronic ignition/module? The splices are throwing me off a little here. I checked the electric section in the Tech area, but didn't see any complete wiring diagrams.
Yes look at two links below
Quote:
3. MY voltmeter broke, but when I put my test light on the IGN2 side of the ballast, the light was dim, on the IG1 side it was a solid bright. Is this normal?
It is dimmer because you are reading the back fed voltage to the light.
ignition 2 is the power you get from the key in crank mode (full 12 volts only when the key is in crank) to the coil. But if the key is not in the crank mode you are getting the voltage fed back from the IGN1
Quote:
Hope these questions make sense. I just spent a couple of hours in the garage trying to figure this out with my manuals and needed a breather.
Thanks!!!
Take a look at the links. I colored the wires so it is a whole lot easier to read and follow.
inside wire harness
Engine side
Download and save as I will pull the link off in a week. They should be able to fit a legal size piece of paper each. Easier to read looks something like this, but larger size so you can print and read.
 If I posted the full size someone would scream.
The wire colors should be similar to yours on the cuda... The spots on the junction blocks is where you will see the difference if any. You could also download the pictures from the link that 440sixpack showed and color the wires yourself, but this should give you a good idea of how the system works.
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Re: "Battery" wire on the alternator - 70 Cuda 440
[Re: HealthServices]
#295938
04/22/09 10:14 AM
04/22/09 10:14 AM
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Joined: Nov 2004
Posts: 227
Scottsdale, AZ
Cudalord
OP
enthusiast
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OP
enthusiast
Joined: Nov 2004
Posts: 227
Scottsdale, AZ
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Thanks for the diagrams! My wiring is a little different because I have the 70 Model with dual fields on the alternator, but it helps. Does anyone have a complete ignition diagram with the electronic ignition wired in? Don't mean to be a pest, but I want to do this once and be done with it! Thanks again 
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& are willing to help