Alternator Cable Continuity
- Disconnect leads from alternator terminals, turn ignition on, connect voltmeter to a good ground and to each lead in turn. See Fig 1. Battery voltage should be present at each lead.
- If a low or zero reading is obtained on main B+ lead, check starter solenoid connections, terminal posts and battery connections.
- If low or zero reading is obtained on D+ lead, check warning light, wiring from ignition switch to warning light and wiring from warning light to alternator. If no fault is found, turn ignition off and reconnect leads to alternator.
Courtesy of JAGUAR CARS, INC.