Before doing more cutting, do a search on it in this section.
Hit the search link on this page, search on Ammeter.
If you are trying to make your factory amp guage read correctly, you should NOT run power through it like a normal amp guage.
The Camaro factory amp guage reads amps by reading differential voltages from two places on the cars electrical system. So it's really a VOLT meter that is calibrated in amps.
A regular amp meter measures two voltages before and after a SHUNT, usually the SHUNT is attached to the rear of the ammeter and looks like a little bar or strip of brass.
So the ammeter is measuring the difference in voltages before and after the SHUNT.
Think of the shunt as a resistor that will cause a very small drop of voltage from one side to the other.
The factory guage uses the Camaro wiring harness as the SHUNT. There is no shunt attached to the back of the meter. If you try to pass high amps through the factory ammeter you might burn it out, but probably it would just not pass any amps through it, as it has very high resistance.
It would be like trying to take pass all the car's load through a test light bulb.
On a stock Camaro wiring harness, the power comes from the battery using a small lead from the + terminal. It attaches to an insulated block attached to the radaiator support near the battery. It then leads to the horn relay and then splits to the fuse block, voltage regulator, and alternator.
There are fuseable links near the horn relay that can burn out. They can partially burn out and pass low amounts of current but fail when a higher load is applied.
I'm not shure where it goes from there but there are basically two halves to the fuse block, one for ignition, one for accesories. I think there are two separate sections on the ignition switch for each half to keep them separate.
The clipped small black lead near the horn relay might be for a small capactior to reduce alternator whine.
Do the search, I think you will find a lot of info.
Check my web page for First Gen Camaro suspension info:
67 RS 327
69 Camaro Vintage Racer
65 Lola T-70 Can Am Vintage Racer
[This message has been edited by davidpozzi (edited 09-16-2000).]