Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Short Test Using Voltmeter



Short Test Using Voltage:





Short Test Using Voltmeter:

1 Voltmeter
2 Switch for reversing light (OFF)
3 Connection to load disconnected
4 Rear light
5 Battery
A Short to ground

Measuring instrument: Voltmeter

Problem: Short to ground

Test Procedure:

Disconnect voltage source and connect voltmeter with test lead Disconnect the load. Move the lead to the load back and forth and observe the voltmeter reading. If the voltmeter registers a voltage there is a short to ground in the wiring.