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Old 05-01-2021, 03:09 PM   #1
JoeCB
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Default First time electrical problem

First time ever since I have had this car for 50 years, electrical issue. Last fall at the end of the season... battery went dead. Old battery I figured. Just now installing a new battery, I notice a tiny spark as I connected the last terminal... Uh Oh !
My VOM shows a 4 amp draw. So what on a 31 Coupe draws 4 amps? After diddling around with a bunch of wires, I find an intermittent connection at the push lock ignition switch. With the switch pushed in (off) wiggle the key and occasionally get a sustained "on" connection. So now to pull the whole darn cable/ switch assembly and see what's going on.
Answer to the question what draws 4 amps? ... the coil.

Joe B
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Old 05-01-2021, 05:21 PM   #2
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Default Re: First time electrical problem

Dick Crabtree can fix that right up for you.
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Old 05-01-2021, 06:33 PM   #3
Ernie Vitucci
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Default Re: First time electrical problem

Good afternoon...Your pop-out system needs some love! You can send it out for a re-build and use a simple two position key switch (on-off) in the meantime...Bratton's and Burts have good ones and Snyders as well, also Sammy at Arizona Model A. I had mine re-built some years ago and never got around to putting it back in the car! Ernie in Arizona
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Old 05-01-2021, 06:48 PM   #4
JoeCB
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Default Re: First time electrical problem

How to contact Mr Crabtree? or does sell through a supplier or on line

Joe
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Old 05-01-2021, 08:22 PM   #5
Tom Endy
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Default Re: First time electrical problem

The four amps is the current flow through the ignition coil. When you switch the ignition on and the points should happen to be closed the circuit will draw a nominal four amps through the coil. A short in the pop-out cable or at the ignition switch would put a ground on the coil and it would do the same.

I had the pop-out cable for my Grandson's 30 Tudor rebuilt by Dick Crabtree,

He is in Missouri 605-487-7229.

Tom Endy
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Old 05-01-2021, 09:08 PM   #6
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Dick is a member here. You could also do a search of members and send him a PM.
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Old 05-01-2021, 09:38 PM   #7
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Default Re: First time electrical problem

Dick Crabtree is in Pickstown, South Dakota, on Missouri Drive.

mbcrabtree@aol.com

Excellent work at very fair prices.

Chris W.
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Old 05-01-2021, 11:14 PM   #8
JoeCB
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Thank you guys. I'll make that contact

Joe B
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Old 05-02-2021, 10:02 AM   #9
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Default Re: First time electrical problem

Quote:
Originally Posted by Tom Endy View Post
The four amps is the current flow through the ignition coil. When you switch the ignition on and the points should happen to be closed the circuit will draw a nominal four amps through the coil.
FWIW, w/the engine running the current will be down to about 1 or 1&1/2 amps.
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