dumb kid.. simple fix??

[rich weyand]

Put it across something known, like a 9 volt battery, and play around until you get the right reading.  Then use it to measure the choke voltage.

[jaredts]

The red lead on the connector to choke, the black meter lead to something steel on the engine or battery negative.  You will only have 12 volts with the key on or if you're going through the factory oil pressure switch then only when the engine is running.