10 Years Available
Plymouth Horizon Light Bulb Sizes
Complete bulb size reference for the Plymouth Horizon from 1978 to 1990. Find headlight, fog light, turn signal, and brake light bulb sizes for every model year.
Every Plymouth horizon from 1978 to 1990 uses the same H6054 low beam bulb — once you confirm your year is within this range, you only need one part number.
Year Range
1978 – 1990
10 model yearsBulb Sizes Across Years
| Position | Bulb Type(s) | Years | Status |
|---|---|---|---|
| Turn Signal Front | 1157(1978–1990) | 10 years | Consistent |
| Side Marker | 168(1980–1990) 1157(1978–1979) | 10 years | Changed |
| Low Beam | H6054(1978–1990) | 10 years | Consistent |
| Parking Light | 1157(1978–1990) 168(1985–1989) | 10 years | Changed |
| Turn Signal Rear | 1157(1979–1990) 1156(1978–1980) | 10 years | Changed |
| Reverse Light | 1156(1978–1990) | 10 years | Consistent |
| Tail Light | 1157(1978–1990) 168(1988–1988) | 10 years | Changed |
| License Plate | 168(1978–1990) | 10 years | Consistent |
| Brake Light | 1157(1978–1990) 912(1987–1987) | 10 years | Changed |
| Trunk Light | 912(1978–1990) | 7 years | Consistent |
| High Beam | 194(1978–1990) | 9 years | Consistent |
| Map Light | 168(1985–1985) | 1 years | Consistent |
| Dome Light | 912(1980–1980) | 1 years | Consistent |
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Frequently Asked Questions
We have bulb size data for the Plymouth Horizon from 1978 to 1990, covering 10 model years. Select your year below for a complete position-by-position bulb chart.
No, the Plymouth Horizon has used the H6054 low beam bulb consistently across all 10 model years in our database. Any year in the 1978–1990 range uses the same bulb.
The Plymouth Horizon uses a H6054 bulb for the low beam and a 194 for the high beam. Select your year below for the exact fitment chart.
Yes. The Plymouth Horizon uses a H6054 low beam, and direct-fit LED conversion kits for that size are widely available. LED upgrades typically produce 2–3× more light output than stock halogen and last 25,000+ hours. Look for a DOT-compliant kit with a proper beam cutoff pattern.
Select your model year from the list below. Each year page shows every bulb position — low beam, high beam, fog light, turn signal, and brake light — with the correct size and a link to buy it on Amazon.