OT: Question about auto electrical test device

[mcgarrett]

Originally Posted by Herb Concord Ca

If you plan on using it on the Model A. Connect the red, positive lead to ground. Use the black negative lead to measure voltages. Off the car, using the resistance scales, it won't matter which lead connects to what.
Hope this helps.

Yes, your info is very helpful. Thanks! My electrical knowledge and skills are not as proficient as I would like, but I know that there are nuances with certain electrical test equipment that can end with catastrophic results if connected wrong.