In article ,
Graeme wrote:
In message , "Dave Plowman (News)"
writes

It also depends on what is wired via your ammeter. It will obviously
show charge, but not everything on the car might be wired through it to
show discharge.

The main connection from the battery goes to the starter switch. From
there (same side of the switch), a brown wire goes to the A terminal of
the Control Box. The idea is to break that brown wire for the ammeter,
so the ammeter reads everything except the starter motor.

Dunno. Remember on my '55 MG Magnette, not everything was wired via the
ammeter. The factory spotlights for one. All too easy to exceed 30 amps.

The existing brown wire is probably 6 inches long, but mounted on the
bulkhead, so extending to an ammeter would require an additional 18
inches or so, in both directions.

Must admit I'd be more inclined to fit an alternator so you don't have to
worry about how many amps you're using. ;-)

And if you want to know battery state, a voltmeter is more useful.

--
*Work is for people who don't know how to fish.

Dave Plowman London SW
To e-mail, change noise into sound.