PART 2: Philips W21/5W Led DRL Modification And Install On OPEL

What Are Daytime Running Lights (DRL)

Reverse Light Bulb Replacement

Check Daytime Running Lights Side Lights Error Message Explained - Xenons4U Automotive Blogs

2x T20 W21W W21/5W LED Bulb Side Daytime Light Vauxhall Astra J Corsa D Insignia

2x T20 W21W W21/5W LED Bulb Side Daytime Light Vauxhall Astra J Corsa D Insignia

ENG] How to replace Fiat 500 LED day running light T20 installation tutorial - Simoni Racing

Opel Vauxhall Mokka and Mokka X

2) No Resistor Need Amber Yellow 240-emitter COB LED 7440 T20 LED Bulbs For Front or Rear Turn Signal Lights (No Hyper Flash) - AliExpress

2pcs LED Daytime Running Light DRL W21/5W 7443 Canbus For Opel Cascada Insignia Corsa D Astra J Meriva B Mokka A Zafira C Vivaro - AliExpress

LED Bulbs & CANbus Error Codes - How To Fix (with video) : Automotive News by ABD.co.uk