Amp Meter ??

[fixitphil]

I'm installing a 12v system (60 amp alt) in my '31 Sport Coupe and have been advised by a competent club member that the stock amp meter will have a tendency not to hold up, that I should replace it with a voltmeter. any thoughts and have any of you experienced that problem?
Thanks, Phil

[duke36]

We have 12 volt , 60 amp alt and Zipper Ignition. So far no issues with 30 amp. ammeter.

[fixitphil]

Thanks Duke. I think the stock amp meter is 15 volt. Maybe that is the answer.

[Jim Brierley]

You'll have no trouble with the stock amp meter.

[RawhideKid]

Hey Phil, I use both a volt and 30 amp meter. But I only have a 35amp alternator, but the ammeter is not voltage sensitive, so use what ya got. I would however install a 30amp meter as opposed to the stock 20 amp meter, less strain on the needle.

[fixitphil]

Sponsored Links (Register now to hide all advertisements)

Thanks guys. This info really helps.

[Charlie Stephens]

On my '32 I placed a jumper wire across the the posts on the ammeter so only 1/2 (approx) of the current goes through the meter. Now all I have to do is double the amps in my head when reading the meter. You may be able to do this at the junction box depending on your wiring diagram. Read up on the quality of the reproduction ammeters before you make your decision.

Charlie Stephens

[fixitphil]

Thanks to all of you for the help.

[marc hildebrant]

Originally Posted by Charlie Stephens

On my '32 I placed a jumper wire across the the posts on the ammeter so only 1/2 (approx) of the current goes through the meter. Now all I have to do is double the amps in my head when reading the meter. You may be able to do this at the junction box depending on your wiring diagram. Read up on the quality of the reproduction ammeters before you make your decision.

Charlie Stephens

The gauge of the wire that you use for the added wire determines how the amp meter scale is changed. High number does less, low number does more. The electrical term for the added wire is a "shunt".

Marc