1. Use bulb size as the first filter
Start the inquiry with the requested bulb size and target market. Do not assume the same bulb route fits every vehicle that appears under a broad search term.
2. Verify physical and optical requirements
Check installation space, product dimensions, beam pattern evidence and any application-specific constraints against the exact product model.
3. Confirm electronics and CANBUS needs
Vehicle electronics vary. Ask whether the selected series has CANBUS-related functionality and whether additional decoding may be needed for the intended application.
4. Build the wholesale brief
For wholesale sourcing, add estimated quantity, target market, packaging or private-label requirements and the bulb-size mix you expect to purchase.