JRV -

Do you really still use a test light in automotive diagnostics? These units draw dramatically more current than a multimeter and in a lot cases can damage sensitive electrical circuits such as ECUs, sensors, etc. They also provide a path for electricity, which can unintentionally activate circuits within a car at unintended times. I know of several mechanics who were badly injured or killed when they accidentally set off airbags using test lights. The cost for a cheap multimeter is only a few dollars more than a test light, but especially for people who aren't trained in electricity, they are a big safety net both for people and for unintended damage to expensive parts.

Just curious...

-- charles