[shorod]

Where are you placing your meter probes when measuring a ground between the indicator light and ign switch? If you have the meter set to "resistance" or "ohms" and have one probe on ground and the other probe on the charge indicator terminal that is tied to the ignition switch, but the bulb and voltage regulator are still in circuit, you may be measuring a sneak path to ground. If you remove the bulb and/or voltage regulator and measure something significantly smaller than 510 ohms to ground, then I'd agree that you have a problem in the wiring somewhere.

With the bulb and regulator in circuit though, I'd be hesitant to conclude you have a short to ground. Pull the bulb and check for resistance to ground on both bulb terminals.

-Rod