OT: Question about auto electrical test device

[mcgarrett]

Originally Posted by 51woodie

I have one of those "analyzers" as well as a timing light that I built +/- 60 years ago, from kits when Heathkit was in business. I use the analyzer on my 6 volt + ground Coupe, by connecting the leads in the correct polarity.
Point of interest, the timing light has induction pickup off the plug wire.

51woodie,
That's good to know. Thanks for the feedback. The instruction manual makes no mention anywhere about using the analyzer on a positive ground vehicle, but perhaps they assumed the user would automatically know what to do. If I understand you correctly, you're saying to just change the polarity to correspond with a "positive" ground and all will be fine. I'd like to use it for various electrical tests but didn't want to make a mistake and fry something.