I stumbled across this info & figured it might be helpful to someone.
1980 CHEVROLET Malibu lighting
High & low beam headlamp
H6054
H6054ST Silverstar High Performance Lighting: The Whiter and Brighter Halogen
H6054XV XtraVision Halogen - The Brighter Light
H6054CB Cool Blue Halogen - The Whiter Light
H6054LL Long Life Halogen Upgrade: Lasts 6x longer
Parking light
1157A
1157AST Silverstar Signal Lighting: Complete the Look: Crisp, Clean, Style
1157ALL Long Life Upgrade: Up to twice the life of the standard lamp
Front turn signal
1157A
1157AST Silverstar Signal Lighting: Complete the Look: Crisp, Clean, Style
1157ALL Long Life Upgrade: Up to twice the life of the standard lamp
Rear turn signal
1157
1157LL Long Life Upgrade: Up to twice the life of the standard lamp
Tail light
1157
1157LL Long Life Upgrade: Up to twice the life of the standard lamp
194
194LL Long Life Upgrade: Up to twice the life of the standard lamp
Stop light
1157
1157LL Long Life Upgrade: Up to twice the life of the standard lamp
License plate
194
194LL Long Life Upgrade: Up to twice the life of the standard lamp
Back up light
1156
1156ST Silverstar Signal Lighting: Complete the Look: Crisp, Clean, Style
1156LL Long Life Upgrade: Up to twice the life of the standard lamp
Front sidemarker
194
194LL Long Life Upgrade: Up to twice the life of the standard lamp
Rear sidemarker
194
194LL Long Life Upgrade: Up to twice the life of the standard lamp
Dome light
1004
168
168LL Long Life Upgrade: Up to twice the life of the standard lamp
Step/Courtesy light
1004
1892
562
Trunk/Cargo area
1003
1003LL Long Life Upgrade: Up to twice the life of the standard lamp
Under hood light
93
Instrument-general
168
168LL Long Life Upgrade: Up to twice the life of the standard lamp
194
194LL Long Life Upgrade: Up to twice the life of the standard lamp
Hi-beam indicator
194
194LL Long Life Upgrade: Up to twice the life of the standard lamp
Seat belt indicator
194
194LL Long Life Upgrade: Up to twice the life of the standard lamp
Clock
1895
Directional signal indicator
168
168LL Long Life Upgrade: Up to twice the life of the standard lamp
194
194LL Long Life Upgrade: Up to twice the life of the standard lamp
Radio dial
194
194LL Long Life Upgrade: Up to twice the life of the standard lamp
____________________________________________________
When two or more lamps are listed for the same application, remove the lamp and check the numerical designation.
Tommy
1980 CHEVROLET Malibu lighting
High & low beam headlamp
H6054
H6054ST Silverstar High Performance Lighting: The Whiter and Brighter Halogen
H6054XV XtraVision Halogen - The Brighter Light
H6054CB Cool Blue Halogen - The Whiter Light
H6054LL Long Life Halogen Upgrade: Lasts 6x longer
Parking light
1157A
1157AST Silverstar Signal Lighting: Complete the Look: Crisp, Clean, Style
1157ALL Long Life Upgrade: Up to twice the life of the standard lamp
Front turn signal
1157A
1157AST Silverstar Signal Lighting: Complete the Look: Crisp, Clean, Style
1157ALL Long Life Upgrade: Up to twice the life of the standard lamp
Rear turn signal
1157
1157LL Long Life Upgrade: Up to twice the life of the standard lamp
Tail light
1157
1157LL Long Life Upgrade: Up to twice the life of the standard lamp
194
194LL Long Life Upgrade: Up to twice the life of the standard lamp
Stop light
1157
1157LL Long Life Upgrade: Up to twice the life of the standard lamp
License plate
194
194LL Long Life Upgrade: Up to twice the life of the standard lamp
Back up light
1156
1156ST Silverstar Signal Lighting: Complete the Look: Crisp, Clean, Style
1156LL Long Life Upgrade: Up to twice the life of the standard lamp
Front sidemarker
194
194LL Long Life Upgrade: Up to twice the life of the standard lamp
Rear sidemarker
194
194LL Long Life Upgrade: Up to twice the life of the standard lamp
Dome light
1004
168
168LL Long Life Upgrade: Up to twice the life of the standard lamp
Step/Courtesy light
1004
1892
562
Trunk/Cargo area
1003
1003LL Long Life Upgrade: Up to twice the life of the standard lamp
Under hood light
93
Instrument-general
168
168LL Long Life Upgrade: Up to twice the life of the standard lamp
194
194LL Long Life Upgrade: Up to twice the life of the standard lamp
Hi-beam indicator
194
194LL Long Life Upgrade: Up to twice the life of the standard lamp
Seat belt indicator
194
194LL Long Life Upgrade: Up to twice the life of the standard lamp
Clock
1895
Directional signal indicator
168
168LL Long Life Upgrade: Up to twice the life of the standard lamp
194
194LL Long Life Upgrade: Up to twice the life of the standard lamp
Radio dial
194
194LL Long Life Upgrade: Up to twice the life of the standard lamp
____________________________________________________
When two or more lamps are listed for the same application, remove the lamp and check the numerical designation.
Tommy