continuity tester ?>

[mark krawczuk]

hi, any body got links or schematics for a continuity tester for
automotive use ? preferably simple design with audio and visual
indication , voltage detection would be a bonus !!
mark k

 

[JeffM]

mark krawczuk wrote:

schematics for a continuity tester for automotive use ?
preferably simple design with audio and visual indication,

A Sonalert in series with a 9V battery.

Add a series LED for visual.
Your biggest problem will be if the car's battery is hooked up.

voltage detection would be a bonus !!

Removing the 9V from the previously described jig

(and replacing it with a zero-ohm jumper;
a switch would be useful here)
then hooking the minus side of the Sonalert to the chassis
will also give a rough go/no-go test.

In addition, continuity beepers are a common feature
on repair-oriented DMMs.