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[a guy]

1928 model a 2 door sedan has battery draw. How do I find my battery draw. Battery goes dead without car use. Appreciate your help. Jim.

[Mitch//pa]

hi Jim,
disconnect either battery cable from the fully charged battery and take a 2.00 basic test light, put either end on the battery post that the cable was removed from and the other end to the battery cable. if you have a draw it should light. when the draw is repaired the light will go out...
common causes are brake lights stuck on or a bad cut out on the generator. if its not a brake lamp issue try removing the wires from the cut out and see if that turns off the test light...

[BRENT in 10-uh-C]

Originally Posted by a guy

1928 model a 2 door sedan has battery draw. How do I find my battery draw. Battery goes dead without car use. Appreciate your help. Jim.

Just out of curiosity, does it have an alternator or generator on it?


.

[a guy]

Has generator.

[Mike V. Florida]

Yes, very common problem is the brake light getting stuck on.

[a guy]

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Brake light not sticking.

[fiddlybits]

If no obvious lights and ignition is off (engine shuts off when key is turned to off) it might be the generator cutout .... take fan belt off and see if generator behaves like a motor. If it does your cutout is stuck closed. (or shorted if electronic) Either way, replace.

[Mike V. Florida]

Could just be a bad battery.

[Charlie Stephens]

How much draw are you getting? That might be a clue to the problem. Do you have an accurate ammeter (cheap at places like radio shack) to check? And as Mike said in post #8, could just be a bad battery. Try disconnecting the battery and letting it set for a period of time and see if it goes dead.

Charlie Stephens

[Charlie Stephens]

Originally Posted by a guy

1928 model a 2 door sedan has battery draw. How do I find my battery draw. Battery goes dead without car use. Appreciate your help. Jim.

What do you mean "goes dead without car use"? Is this over a couple of hours, overnight, over a couple of weeks or over a year? Assuming it is the shorter period walk around the car at night looking for lights: headlights, cowl lights, tail lights, brake lights, dash light. Any chance that your pop out switch is popping back out after you turn off the motor. If this happens and the points are closed it will run down the battery, and heat up (and eventually ruin) the coil.

Charlie Stephens

[Quigley1930]

I just replaced the battery in my truck for the same reason. Would go dead overnight. One cell was 75% dead. Of course battery shop said only fix was to give them 80 bucks for a new one, which I did

Sewall

[Mike V. Florida]

Here is the other thread same topic same person posting,

https://www.fordbarn.com/forum/showthread.php?t=165648

Makes it extra hard to help.