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Sonata & Tiburon

  1. Disconnect negative battery cable. Remove rheostat switch from instrument panel and disconnect 3-pin connector. Using a fused jumper wire set, connect battery voltage to rheostat switch terminal No. 2. Connect ground to rheostat switch terminal No. 3.
  2. Connect 12-volt test light between rheostat switch terminals No. 1 and 3. See Fig 1. Rotate rheostat knob in both directions. Test light should get gradually brighter in one direction and gradually dimmer in opposite direction without flickering. If rheostat does not test as specified, replace rheostat.
Fig 1: Identifying Rheostat Switch Harness Connector Terminals (Sonata & Tiburon)
G00009637Courtesy of HYUNDAI MOTOR CO.
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