The current will bypass the ammeter and most of it will go directly to the
battery. The ammeter will show a slight movement, but not much.
As for ta higher rated ammeter, if you have a 67.5, you are in luck.
The 67.5 uses 2 gauges in one and the ammeter part of the fuel/ammeter
can be replaced with the ammeter out of 280Z's, which, depending on
year, have 45 or 60A ratings. For those that want to run their
ammeter directly to the battery, use a volt meter out of a later
280Z or 300Zx, it will also fit.
One word on using a higher rated ammeter. When you upgrade the ammeter,
be sure to upgrade the wire from the alternator to the ammeter, as well as
from the ammeter to tha battery.
Peace,
Pat
- Support Habitat for Humanity, A "hand up", not a "hand out" -
Pat Horne, Network Manager, Shop Supervisor, Future planner
CS Dept, University of Texas, Austin, Tx. 78712 USA
voice (512)471-9730, fax (512)471-8885, horne@cs.utexas.edu
On Tue, 3 Jul 2001, Brian Hollands wrote:
> I'm not sure how the ammeter really works so this might be a dumb question
> but if you wire the alternator output straight to the battery the ammeter
> only "sees" the batteries side of the circuit - hence it will only show a
> discharge. Can you wire the old alternator out put wire (fused?) to the new
> alternator's output in addition to the new heavy gauge wire going straight
> to the battery? I guess the question is does the current have to flow
> through the ammeter for it to measure or does it just need to sit between
> the two and measure potential? I'm assuming that the current actually needs
> to flow through the ammeter for it to work. If that is the case, does the
> ammeter blow up at 30 amps? That is, could you wire the new charging
> circuit through the ammeter with heavier gauge wire to handle the greater
> amperage? If the ammeter blows up (or fuses internally) at 30 amps, can it
> be modified to accept greater amperage?
>
> BTW - judging from the wiring diagram, if Adam has the alternator on the
> manifold side of the car would it not be better to route the heavy gauge
> battery cable the Daniel suggested from the alternator to the big terminal
> on the starter where the positive battery cable terminates? That seems
> cleaner than having two big cables ending at the battery itself. Just keep
> the new cable away from the exhaust manifold.
>
> One more thing - my engine went to the machine shop today!!!!!!!!!!
>
> Brian
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