Idiot light

Author Topic: Idiot light  (Read 1956 times)

Offline V12T

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Idiot light
« on: November 13, 2018 - 06:00:24 PM »
Is it possible to wire an idiot (alternator) light into a 1970 charging system with 2 x field Alternator and Alternator regulator?




Offline 70chall440

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Re: Idiot light
« Reply #1 on: November 13, 2018 - 10:00:07 PM »
I believe that it can, however you would have to research the internet for the instructions.
Current Mopar
70 Challenger RT 440-6 EFI, 73 Cuda 416-6 EFI
05 Hemi Durango, 01 Ram 4x4, 14 Ram 2500 4X4, 10 PCP Challenger 6 spd RT, 01 Viper GTS ACR, 52 B3B w/330 Desoto Hemi, 70 Hemi RR (under const)
Past Mopars
9 x Challengers. AAR Cuda, 4 RR, 2 GTX, 4 Chargers, etc... (too many to list)

Offline V12T

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Re: Idiot light
« Reply #2 on: November 14, 2018 - 04:11:50 AM »
Tried that. Loads of info EXCEPT for two terminal Mopar with regulator specific. Any help would be appreciated.

Offline 1 Wild R/T

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Re: Idiot light
« Reply #3 on: November 14, 2018 - 08:05:22 AM »
The Chrysler alternator/regulator doesn't support it, you would need an added module...
JS27N0B 70 Challenger R/T Convertible  FJ5 Sublime, Show Poodle w/90,000 miles since resto
WS27L8G 68 Coronet R/T Convertible  PP1 Bright Red, Project
RM21H9E 69 Road Runner Coupe R4 Performance Red, Sold...
5H21C  65 Falcon 2 dr Wagon... Dog Hauler...

Offline V12T

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Re: Idiot light
« Reply #4 on: November 14, 2018 - 08:25:06 AM »
I guess that's why I can't find a diagram. Any idea exactly what module would be required.

Offline 70chall440

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Re: Idiot light
« Reply #5 on: November 14, 2018 - 11:25:26 AM »
I have to apologize, I made a vague statement without researching it. Now that I look, it appears a lot more difficult that it would seem. I have looked at quite a few wiring diagrams and it appears the idiot lights trigger off of the relay but I would suspect that there would have to be a load sensing module of some type to trigger a light. I will keep looking at solutions and if I find something I will post it here.

Do you have a volt meter in the car?
Current Mopar
70 Challenger RT 440-6 EFI, 73 Cuda 416-6 EFI
05 Hemi Durango, 01 Ram 4x4, 14 Ram 2500 4X4, 10 PCP Challenger 6 spd RT, 01 Viper GTS ACR, 52 B3B w/330 Desoto Hemi, 70 Hemi RR (under const)
Past Mopars
9 x Challengers. AAR Cuda, 4 RR, 2 GTX, 4 Chargers, etc... (too many to list)

Offline 70chall440

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Re: Idiot light
« Reply #6 on: November 14, 2018 - 11:31:38 AM »
You probably have seen this, but this is about as close as I have found to your question.

https://www.youtube.com/watch?v=waXTDQX6f-s
Current Mopar
70 Challenger RT 440-6 EFI, 73 Cuda 416-6 EFI
05 Hemi Durango, 01 Ram 4x4, 14 Ram 2500 4X4, 10 PCP Challenger 6 spd RT, 01 Viper GTS ACR, 52 B3B w/330 Desoto Hemi, 70 Hemi RR (under const)
Past Mopars
9 x Challengers. AAR Cuda, 4 RR, 2 GTX, 4 Chargers, etc... (too many to list)

Offline V12T

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Re: Idiot light
« Reply #7 on: November 14, 2018 - 01:45:38 PM »
I did see that but my eyes glazed over! I have an ammeter but no voltmeter on my 70 Challenger. Perhaps I am an idiot but having driven cars for 50 years with this light I kinda miss it. Hard to believe there isn't a simple way to do it but I can't figure it.

Offline 70chall440

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Re: Idiot light
« Reply #8 on: November 14, 2018 - 10:08:04 PM »
I agree which is why I said what I did initially; it seems like something that should be easy to figure out and install but obviously that is not the case. I even looked for a programmable volt meter that would have a light come on if the volts dropped or spiked but didn't find anything.

I would suggest installing an aftermarket volt meter, they make really small ones if you dont want it really showing.
Current Mopar
70 Challenger RT 440-6 EFI, 73 Cuda 416-6 EFI
05 Hemi Durango, 01 Ram 4x4, 14 Ram 2500 4X4, 10 PCP Challenger 6 spd RT, 01 Viper GTS ACR, 52 B3B w/330 Desoto Hemi, 70 Hemi RR (under const)
Past Mopars
9 x Challengers. AAR Cuda, 4 RR, 2 GTX, 4 Chargers, etc... (too many to list)

Offline Beekeeper

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Re: Idiot light
« Reply #9 on: November 14, 2018 - 10:19:15 PM »
I agree which is why I said what I did initially; it seems like something that should be easy to figure out and install but obviously that is not the case. I even looked for a programmable volt meter that would have a light come on if the volts dropped or spiked but didn't find anything.

I would suggest installing an aftermarket volt meter, they make really small ones if you dont want it really showing.

I think that’s the route I would take also. A voltmeter tells you a lot about the health of the system.