here is a good site to find out what bulb for any car:
http://www.sylvania.com/ConsumerProducts/AutomotiveLighting/LampReplacementGuide/
Quote:
When two or more lamps are listed for the same application, remove the lamp and check the numerical designation.
1991 MITSUBISHI Galant
Low beam headlamp
9006
9006SU SilverStar Ultra: The brightest and whitest light. Up to 50% brighter, up to 40% more downroad visibility and up to 50% more sideroad visibility.
9006ST Silverstar: The brighter and whiter light. Up to 35% brighter, up to 30% more downroad visibility and up to 35% more sideroad visibility.
9006EB EcoBright - Your Environmental Choice. Save Energy - Save Money. Up to 25% brighter light. CO2 reduced 9 to 21%. Gas savings $2 to $19.
9006XV XtraVision: The brighter light for upgraded performance. Up to 30% brighter light and up to 25% more downroad visibility.
9006CB Cool Blue: The whiter light for style. Up to 25% brighter light and up to 25% more downroad visibility.
High beam headlamp
9005
9005SU SilverStar Ultra: The brightest and whitest light. Up to 50% brighter, up to 40% more downroad visibility and up to 50% more sideroad visibility.
9005ST Silverstar: The brighter and whiter light. Up to 35% brighter, up to 30% more downroad visibility and up to 35% more sideroad visibility.
9005EB EcoBright - Your Environmental Choice. Save Energy - Save Money. Up to 25% brighter light. CO2 reduced 9 to 21%. Gas savings $2 to $19.
9005XV XtraVision: The brighter light for upgraded performance. Up to 30% brighter light and up to 25% more downroad visibility.
9005CB Cool Blue: The whiter light for style. Up to 25% brighter light and up to 25% more downroad visibility.
Parking light
168
168LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
Front turn signal
1156
1156ST SilverStar: The brighter, whiter signal light. Up to 30% brighter light, up to 20% whiter light and up to 10% farther and wider.
1156LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
Rear turn signal
1156
1156ST SilverStar: The brighter, whiter signal light. Up to 30% brighter light, up to 20% whiter light and up to 10% farther and wider.
1156LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
Tail light
2057
2057LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
Stop light
2057
2057LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
High mount stop light
921
921ST SilverStar: The brighter, whiter signal light. Up to 30% brighter light, up to 20% whiter light and up to 10% farther and wider.
921LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
License plate
168
168LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
Back up light
1156
1156ST SilverStar: The brighter, whiter signal light. Up to 30% brighter light, up to 20% whiter light and up to 10% farther and wider.
1156LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
Front sidemarker
194
194LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
Rear sidemarker
168
168LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
Ash tray
74
74LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
Glove box
74
74LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
Dome light
DE3175
DE3175LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
Step/Courtesy light
DE3022
DE3022LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
Trunk/Cargo area
DE3022
DE3022LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
Instrument-general
158
158LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
53
53LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
74
74LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
Hi-beam indicator
74
74LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
Automatic transmission indicator
53
53LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
Directional signal indicator
74
74LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
