You may look at our range of LED automotive globes and wonder what all these different globe numbers mean: BA15S, T10, E10,BAY15D, etc.
Well luckily these numbers are an industry standard, and actually describe the type and size of the globe's base and pin arrangements. Below is a list of the most common types of automotive globes, and a typical application for them:
| Type | Description |
| T5 | 5mm wedge style base. Used in dashboard illumination |
| T10 | 10mm wedge style base. Used in dashboards, park light, number plate illumination, etc. |
| T20 | 20mm wedge style base. Used in some indicators, tail and brake lights |
| E10 | 10mm Edison screw base. Used in some dashboards, park lights and number plate illumination (typically on older vehicles) |
| BA9S | 9mm Bayonet cap base with single contact pin. Used in dashboards, park lights and various lights |
| BA15S | 9mm Bayonet cap base with single contact pin. Used in dashboards, park lights and various lights |
| BA15D | 15mm Bayonet cap with two contact pins. Used in caravan interior lights and marine navigation lights |
| BAY15D | 15mm Bayonet cap with offset side location tabs, with two contact pins on the base. Used for tail/stop lights (high/low brightness) |
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