Found this cool but of info
1997 FORD F250HD-F350
High & low beam headlamp
9007
9007SU SilverStar Ultra: The brightest and whitest light. Up to 50% brighter, up to 40% more downroad visibility and up to 50% more sideroad visibility.
9007ST SilverStar: The brighter and whiter light. Up to 35% brighter, up to 30% more downroad visibility and up to 35% more sideroad visibility.
9007EB EcoBright - Your Environmental Choice. Save Energy - Save Money. Up to 25% brighter light. CO2 reduced 9 to 21%. Gas savings $2 to $19.
9007XV XtraVision: The brighter light for upgraded performance. Up to 30% brighter light and up to 25% more downroad visibility.
9007CB Cool Blue: The whiter light for style. Up to 25% brighter light and up to 25% more downroad visibility.
Parking light
916
916LL 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
3157
3157ST SilverStar: The brighter, whiter signal light. Up to 30% brighter light, up to 20% whiter light and up to 10% farther and wider.
3157LL 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
3157
3157ST SilverStar: The brighter, whiter signal light. Up to 30% brighter light, up to 20% whiter light and up to 10% farther and wider.
3157LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
Tail light
3157
3157ST SilverStar: The brighter, whiter signal light. Up to 30% brighter light, up to 20% whiter light and up to 10% farther and wider.
3157LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
Stop light
3157
3157ST SilverStar: The brighter, whiter signal light. Up to 30% brighter light, up to 20% whiter light and up to 10% farther and wider.
3157LL 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.
Fog/Driving light
H3-55W
License plate
194
194LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
97
97LL 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
3156
3156ST SilverStar: The brighter, whiter signal light. Up to 30% brighter light, up to 20% whiter light and up to 10% farther and wider.
3156LL 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
916NA
916NALL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
Ash tray
161
161LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
Glove box
161
161LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
Map light
105
105LL 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
561
561LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
89
89LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
912
912LL 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
906
906LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
Under hood light
912
912LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
Instrument-general
161
161LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
194
194LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
37
37LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
Check engine indicator
194
194LL 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
194
194LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
Seat belt indicator
194
194LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.
Brake warning
194
194LL 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
194
194LL 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
194
194LL SYLVANIA Long Life miniature bulbs perform twice as long as any standard miniature bulb. Designed for durability, lower maintenance and greater safety.