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

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Insulated Line Voltage Drop Test


Fig. 2 Insulated Line Voltage Drop Test:






1. Connect voltmeter between starter input terminal and insulated battery terminal, Fig. 2.
2. Voltage reading with starter switch circuit open should read battery voltage. With starter switch closed, voltage reading should be zero.
3. A high voltmeter reading indicates a high resistance in starter circuit.
4. Check all insulated connections at battery, solenoid and starter.