Mitsubishi Eclipse Cross Trunk Bulb Size

Additional Notes

• The Mitsubishi Eclipse Cross trunk bulb specifications reference two distinct bulb types: the H11 halogen and the 12961 miniature wedge, each serving different electrical and physical roles.
• The H11 is a single-filament halogen bulb rated at 12V and 55W, fitted with a PGJ19-2 base. It follows ECE standards used across Europe and worldwide, though it also carries approval for use in the United States.
• The 12961 is a Philips part number designating a T10 miniature wedge bulb with a W2.1x9.5d base, rated at 12V and 5W. Its low wattage reflects its role as a small interior or cargo area light rather than a high-output source.
• The H11 and 12961 are not interchangeable. Their base types, wattage ratings, and physical construction are entirely different, making cross-substitution incompatible without modification.
• The 2018 Eclipse Cross trunk bulb specification carries a production date qualifier of "From 1/1/2018," indicating the 12961 fitment applies to units built from that date onward within the model year.
• The 2021 model year is absent from the specifications, and the H11 fitment is recorded for the 2022 and 2024 model years, while the 12961 applies to 2018-2020 and 2023.
• The alternation between H11 and 12961 across model years indicates that the Eclipse Cross trunk lighting assembly was subject to hardware changes at multiple points in the vehicle's production run, affecting bulb socket compatibility.