Here you go:
http://smokeriders.com/Technical/wiring_diagrams/wiring_diagrams.html
the purple wire is the gauge and white and black are ground!
get a chiltons repair manual at the library for your car.
need to know where to tie in to the fuel gage have a black and white omming out of fank
It is important to have diagrams on hand of a cars parts. A free wiring diagram of this car can be found in the cars maintenance manual, or at an auto shop as a print off.
Full diagnostics at: http://www.4x4wire.com/jeep/tech/electrical/gauges/
You will most likely find the wiring schematic for your Chevrolet in your vehicle's owner's guide. If it is not there, you should probably contact a professional.
You have a ground from the oil sender unit to the gauge. This is how you check a gauge. ground out the wire at the sender and it pegs out the gauge.
I'm not sure what you are referring to. Ignition gauge? Can you describe it?
ignition module , computer , wiring or fuel system problem. when engine stops rpm gauge goesto zero.
no it will only decrease the current carrying capability
There isn't one.
Either the gauge or the voltage regulator device on the charging system has failed.