[TR] amp-meter readings--TR3

[Randall]

> 4 years ago when i was driving my TR3 i don't recall the 
> amp-meter bouncing around between positive charge and zero. 
> as you will guess it like to do that now. any thoughts?

Although it will bounce around under some very specific circumstances
(generator output just slightly more than the regulator wants it to be),
changing engine rpm should make the bounce disappear instantly.

I would be looking for a bad connection anywhere in the charging circuit;
particularly the ground strap from the engine to the frame, and the strap
from the battery to the body.  Paint does NOT conduct, so the where the
battery strap mounts to the body is a common problem spot on a freshly
repainted car.  One way to deal with that problem is to put a new "external
star" type lockwasher between the strap & the body (the points of the
lockwasher will cut through the paint to make connection).

Also check both wires from the control box to the generator, particularly
near the generator where engine heat tends to bake the insulation.  An
intermittent short between the wires will also make the ammeter dance.

Don't forget that the ammeter & the wires to it are part of the charging
circuit.  Don't recall who now, but someone reported an intermittent ammeter
causing similar symptoms.

Randall