Your gauges are not grounded properly. So, When the lights are off the tach
uses the lightbulb filament as its ground path. When you turn on the lights,
that 'ground' goes to 12 volts and your tach has nothing left to run on.
So check the black daisy-chain wires on all the gauges. They have to actually
tie to the chassis somewhere. Then, check all your lighting grounds... Usually
the wiring gets gradually worse as an assembly, so if something in the wiring
goes awry it's a sign that you should check everything.
The non-charging is probably not directly related to the tach behavior...
Depending on when the gen was last rebuilt, it's probably time to check it
out.
Theo
On 2013-04-28, at 5:13 PM, pldflyer@aol.com wrote:
> Car had been running fine...got in car turned the ignition key on, heard
the
> familiar fuel pump sound but noticed NO red ignition light on! Starts right
up
> but ammeter shows no charge?? Now here is the strange part...turn the
lights
> on while running and the tach goes dead, lights off and tach works!!!!! Has
> petronics ignition not wired with the ballast, stock generator and voltage
> regulator. Any ideas before rebuilding generator. I swapped voltage
regulators
> with no change.
>
> Patrick Deschner
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