2012 RAM 3500 Light Bulbs Types:
| Bulb | Type |
| Interior Lights: | |
| Overhead Console Lamps | TS 212-2 |
| Dome Lamp | 7679 |
| Exterior Lights: | |
| Backup | 921 |
| Dual Headlamp | H13 |
| Quad Headlamp – Low Beam | H11 |
| Quad Headlamp – High Beam | 9005 |
| Front Turn Signal Lamp (Dual Headlamp) | 3157K |
| Front Turn Signal Lamp (Quad Headlamp) | 3157NA |
| Fog Lamp | 9145 |
| Center High Mounted Stop Lamp (CHMSL) | 921 |
| Rear Cargo Lamp | 921 |
| Cab Roof Marker Lamps | 194NA |
| Rear Tail/Turn and Stop Lamp | 3157K |
| Rear Lamp Bar ID Marker Lamp | 194 |
| Side Marker Lamps (Dual Rear Wheels) | 194 |
| Backup Lamp | 921 |
| Rear License Plate Lamp | 194 |
