Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSPLYMOUTH1984HORIZON BASE, 1.6 AREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 34 (INSTRUMENT PANEL)TESTINGHEADLIGHT SWITCH TEST
1984 Plymouth Horizon Base, 1.6 A
Headlight Switch Test
1984 Plymouth Horizon Base, 1.6 ASECTION Headlight Switch Test
WARNING: This page is about a different car, the 1994 Eagle Vision, 1994 Dodge Intrepid, 1994 Chrysler New Yorker, 1994 Chrysler LHS, and 1994 Chrysler Concorde. However, it is still accessible from the selected car via links, so may be relevant.
- 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 .
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 | |
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.