A 7506 bulb is a dual-filament automotive bulb with a bayonet base, typically used in certain rear lighting and dash/instrument applications. The exact fit depends on the vehicle and region.
In automotive catalogs, 7506 denotes a two‑filament bulb designed to power two circuits within one unit; however, base types and wattage can vary by maker and market. Always verify base, voltage, and fitment for your specific vehicle before purchasing.
What the 7506 designation covers
The 7506 designation identifies a dual‑filament, bayonet‑base bulb used in a range of automotive lighting applications. Because manufacturers and markets vary, the exact physical base and wattage can differ between models and regions. Always confirm the base type and voltage before purchase.
Common uses and where you might encounter a 7506
- Rear lighting: some tail light and brake/turn-light assemblies in older vehicles
- Dashboard or instrument lighting in certain trims or models
- Interior lighting in specific regional variants
Note that fitment can vary by year, make, model, and region, so consult your owner's manual or a parts catalog to confirm before buying.
Understanding base types you might see with 7506
Bulbs labeled 7506 are typically described as bayonet‑mount dual‑filament bulbs. In practice, you may encounter variants that use similar sockets but different base codes. The most common match is a bayonet base that twists and locks into place, designed to power two filaments independently.
- Bayonet-style bases (two locking lugs) designed for dual filaments
- Two electrical contacts or a single contact depending on variant
- Typically 12V automotive systems, though regional variations exist
As with any bulb replacement, confirm the exact base and filament arrangement on your vehicle to avoid mismatches.
How to confirm a fit for your vehicle
To ensure you purchase the right bulb, follow these steps to verify the fit before buying or installing.
- Inspect the old bulb or the socket to identify the base type (look for bayonet lugs, number of contacts, and markings).
- Match the base to the replacement catalog entry for 7506 or an equivalent cross‑reference.
- Check the vehicle’s service manual or parts database for the exact bulb specification by year, make, and model.
- Assess voltage suitability (most automotive bulbs are 12V, but verify for your region or vehicle).
- When in doubt, bring the old bulb to a parts retailer for in‑person verification or consult the manufacturer’s cross‑reference.
Correctly verifying fit ensures proper illumination, avoids electrical issues, and preserves safety in vehicle lighting.
Summary
The 7506 bulb is a dual‑filament automotive bulb with a bayonet base used in a range of rear lighting and dashboard lighting in various vehicles. Because base designs and regional standards can vary, always check the socket, base type, and voltage rating for your specific application. When in doubt, refer to the vehicle’s manual or consult a reputable parts retailer to confirm an exact match.