Component Tests and General Diagnostics
1. Attach probe circuit tester (in volt range) to middle portion of each filament.
^ When measuring voltage, wrap tin foil around the top of the negative probe. Press the foil against the wire with your finger. Otherwise, the element may be damaged.
2. If a filament is burned out, circuit tester registers 0 or 12 Volts.
3. To locate burned out point, move probe to left and right along filament. Test needle will swing abruptly when probe passes the point.