Headlight Switch Test
- Headlight switch must be removed for testing purposes. Before removing switch from instrument panel, check all related fuses and relays. Check dimmer switch for proper operation.
- Remove headlight switch from instrument panel. See HEADLIGHT SWITCH in REMOVAL & INSTALLATION. Using an ohmmeter, test for continuity between terminals of switch. See Fig 1 . See HEADLIGHT SWITCH TERMINAL CONTINUITY table.
HEADLIGHT SWITCH TERMINAL CONTINUITY
| Position | Terminals | Resistance | |
|---|---|---|---|
| All Switches Off | 7-5 To 8-2 | 10,000-12,000 Ohms | |
| All Switches Off | 7-5 To 8-6 | 10,000-12,000 Ohms | |
| All Switches Off | 8-2 To 8-6 | 6-7 Ohms | |
| All Switches Off | 7-5 To 8-5 | Variable | |
| All Switches Off | 8-2 To 8-5 | Variable | |
| All Switches Off | 8-6 To 8-5 | Variable | |
| Headlights On | 7-7 To 7-6 | Continuity | |
| Headlights On | 7-4 To 7-5 | Continuity | |
| Headlights On | 7-4 To 8-2 | 10,000-12,000 Ohms | |
| Headlights On | 7-4 To 8-6 | 10,000-12,000 Ohms | |
| Headlights On | 7-4 To 8-5 | Variable | |
| Parking Lights On | 7-4 To 7-5 | Continuity | |
| Parking Lights On | 7-4 To 8-2 | 10,000-12,000 Ohms | |
| Parking Lights On | 7-4 To 8-6 | 10,000-12,000 Ohms | |
| Parking Lights On | 7-4 To 8-5 | Variable | |
| Thumbwheel Position | |||
| Dim | 7-5 To 8-5 | Continuity | |
| Dim | 8-2 To 8-5 | 10,000-12,000 Ohms | |
| Dim | 8-6 To 8-5 | 10,000-12,000 Ohms | |
| Bright | 7-5 To 8-5 | 10,000-12,000 Ohms | |
| Bright | 8-2 To 8-5 | 900-1100 Ohms | |
| Bright | 8-6 To 8-5 | 900-1100 Ohms | |
| Dome Lights | 7-5 To 8-5 | 10,000-12,000 Ohms | |
| Dome Lights | 8-2 To 8-5 | 900-1100 Ohms | |
| Dome Lights | 8-6 To 8-5 | 900-1100 Ohms | |
| Dome Lights | 8-2 To 8-5 | Continuity | |
| Dome Lights | 8-2 To 8-3 | Continuity | |
| Foglights On | 7-7 To 7-6 | Continuity | |
| Foglights On | 7-4 To 7-5 | Continuity | |
| Foglights On | 7-4 To 8-2 | 10,000-12,000 Ohms | |
| Foglights On | 7-4 To 8-6 | 10,000-12,000 Ohms | |
| Foglights On | 7-4 To 8-5 | Variable | |
| Foglights On | 7-1 To 7-2 | Continuity | |
| Foglights On | 8-2 To 7-1 | Continuity | |
| Foglights On | 8-6 To 7-1 | 6-7 Ohms | |
| Foglights On | 8-5 To 7-1 | Variable | |