Headlight Switch Test
- 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 under REMOVAL & INSTALLATION. Using ohmmeter, measure resistance between specified switch terminals. See Fig 1 . See HEADLIGHT SWITCH TERMINAL RESISTANCE .
HEADLIGHT SWITCH TERMINAL RESISTANCE
| Switch Position | Terminals No. | Ohms |
|---|---|---|
| All Switches Off | ||
| 7-5 To 8-2 | 10,000-12,000 | |
| 7-5 To 8-6 | 10,000-12,000 | |
| 8-2 To 8-6 | 6-7 | |
| 7-5 To 8-5 | Variable | |
| 8-2 To 8-5 | Variable | |
| 8-6 To 8-5 | Variable | |
| Headlights On | ||
| 7-7 To 7-6 | Continuity | |
| 7-4 To 7-5 | Continuity | |
| 7-4 To 8-2 | 10,000-12,000 | |
| 7-4 To 8-6 | 10,000-12,000 | |
| 7-4 To 8-5 | Variable | |
| Parking Lights On | ||
| 7-4 To 7-5 | Continuity | |
| 7-4 To 8-2 | 10,000-12,000 | |
| 7-4 To 8-6 | 10,000-12,000 | |
| 7-4 To 8-5 | Variable | |
| Thumbwheel Position - Dim | ||
| 7-5 To 8-5 | 900-1,200 | |
| 8-2 To 8-5 | 10,000-12,000 | |
| 8-6 To 8-5 | 10,000-12,000 | |
| Thumbwheel Position - Bright | ||
| 7-5 To 8-5 | 10,000-12,000 | |
| 8-2 To 8-5 | Continuity | |
| 8-6 To 8-5 | Continuity | |
| Dome Lights | ||
| 7-5 To 8-5 | 10,000-12,000 | |
| 8-2 To 8-5 | Continuity | |
| 8-6 To 8-5 | Continuity | |
| 8-2 To 8-3 | Continuity | |
| Foglights On | ||
| 7-7 To 7-6 | Continuity | |
| 7-4 To 7-5 | Continuity | |
| 7-4 To 8-2 | 10,000-12,000 | |
| 7-4 To 8-6 | 10,000-12,000 | |
| 7-4 To 8-5 | Variable | |
| 7-1 To 7-2 | Continuity | |
| 8-2 To 7-1 | Continuity | |
| 8-6 To 7-1 | 6-7 | |
| 8-5 To 7-1 | Variable | |