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 25 (INSTRUMENT PANEL (CONVERTIBLE))TESTINGVOLTMETER CIRCUIT TEST
1984 Plymouth Horizon Base, 1.6 A
Voltmeter Circuit Test
1984 Plymouth Horizon Base, 1.6 ASECTION Voltmeter Circuit Test
WARNING: This page is about a different car, the 1994 Chrysler LeBaron. However, it is still accessible from the selected car via links, so may be relevant.
- Voltmeter readings should indicate regulated alternator output or battery voltage, whichever is greater. To remove voltmeter from instrument cluster, remove cluster bezel from instrument panel.
- Remove gauge retaining screws (if equipped). Remove gauge by pulling straight out from cluster. DO NOT turn or twist gauge when pulling, or severe damage to cluster pins will result.
- With ignition on, check for battery voltage at voltmeter (B+) pin in cluster. See Figure . Using ohmmeter, check for ground continuity at gauge ground pin of cluster. If voltage and ground are present, replace voltmeter.
- If voltage and ground are not present at pins, remove instrument cluster. See INSTRUMENT CLUSTER under REMOVAL & INSTALLATION. Check for battery voltage and ground at appropriate cluster harness connectors. See Figure and Figure . See WIRING DIAGRAMS .
- If voltage and ground are not present at cluster harness connectors, repair wiring as necessary. If voltage and ground are present at cluster harness connectors, check cluster for bent or broken terminal pins. If terminal pins are okay, replace cluster printed circuit board and retest.
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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.