T-10 bulb

Will T-10 lamp fit into the lighting system of my car? Actually, this is a great question to ask as T-10 has specific base matching only the vehicles with the same fitting. According, to ECE Regulation No. 37 automotive light bulbs are classified into three major groups:

• Group 1 - does not imply any restrictions and lamps of this group can be installed on any part of the vehicle. 
• Group 2 - these light bulbs are only allowed to be used in signalling, cornering, reversing lamps and rear license plate lamps.
• Group 3 - lamps are only good for replacement.