97' Pont Gr. Am remote starter&buld test

I have a 97' Pontiac Grand Am. I have a Rattler remote starter and a immobilizer bypass(1)  from bypasskit.com, the PLXR model, it says to hook up the voilet/white wire the the buld test. There illistrasion shows it hooked up to a (-) output, but the wire I found in the 6 pin black harness the thin black wire, reads a 0 volts in the off position, 12 volts in the run position, and 0 volts in the cranking position. I would to know if this is the correct wire? I had read somewhere that the bulb test wire is either an open ground, or grounded loop. Is either one of these correct or I'm way off base? I don't wish to hook the bypass and blow it up. I would appreciate any help.