Headlight Switch

Remove headlight switch. Measure resistance between appropriate terminals at headlight switch with switch in appropriate position. See TESTING HEADLIGHT SWITCH RESISTANCE and TESTING HEADLIGHT DIMMER SWITCH RESISTANCE tables. See Fig 1. If headlight switch does not test as specified, replace headlight switch.

TESTING HEADLIGHT SWITCH RESISTANCE

Switch Position

⁽¹⁾ Ohms

Off

3651-3729

Parking Lights On

1697-2517

Parking & Foglights On

5765-5886

Headlights On

788-809

Auto On

10056-10264

Head Lights & Foglights On

1171-1200

Auto On With Foglights On

24,278-24,773

⁽¹⁾	Measured between terminals No. 6 and 11.

TESTING HEADLIGHT DIMMER SWITCH RESISTANCE

Switch Position

⁽¹⁾ Ohms

Dome

15,568-23,357

Parade

5168-7757

Dim High

2288-3437

Dim Low

688-1037

Off

240-365

⁽¹⁾	Measured between terminals No. 6 and 12.

Fig 1: Identifying Headlight Switch Connector Terminals

Courtesy of DAIMLERCHRYSLER CORPORATION