Originally Posted by bmsgaffer86
I think the 1157 on the 94 is the Back-Up lights (ive made a bulb mistake before
It wouldn't be something-57; it would be something-56. A bulb number ending in 57 is a double-filament design (e.g. 1157, 2057); a bulb number ending in 56 is a single-filament design, such as 1156, often used in backup lamps.
In actual fact, though, the extremely-useful Sylvania bulb lookup website at http://www.sylvania.com/auto/carapp/
says that the '93 Bonneville uses an 1141 bulb for backup lights. Front parking/turn-signals are 2057NA. (The "NA" denotes Natural Amber translucent tint. There'* also a 2057A out there, which is an opaque _painted_ tint, but those are crap and tend to shed their coating if they ever get wet. Make sure you use only the "NA" type for amber bulbs.)