BK1/BK2 Halogen Bulb Upgrade
I still see people asking for better headlight bulbs for the halogen headlights online. So here are some cheap solutions that anyone can do. I found out with some minor trimming in these spots, and a connector change, you can fit a halogen h9 bulb in the BK1 low beam, which will get you 2100 lumens compared to 1350 from the h11b halogen bulbs. Just make sure if you're adding a pigtail connector, that the wiring is all copper or tinned copper (all copper is better). Probably the easiest upgrade you can do that will actually work unlike most if not all LED bulb replacements, that as of the time off this post none have been shown by anyone to actually work properly in the low beams.
For BK2 halogen h7 headlights you can try the Vosla Rallye 65w H7 bulbs if you can still find them, or these 100w bulbs: https://www.maperformance.com/products/hella-optilux-extreme-white-xb-h7-100w-bulbs-h71070307?fbclid=IwdGRjcAS1Dk9jbGNrBLUOSGV4dG4DYWVtAjExAHNydGMGYXBwX2lkDDM1MDY4NTUzMTcyOAABHkC5wbNj0ga5T-of2MTPq-MgPdxMVF1TVr7yfCbg9YkCUAs09Vm11V4323lH_aem_ihiUja4wXWGASqZSo6sVRA
Disclaimer using higher wattage bulbs could have some adverse effects such as increased glare, or drastically reduced lifespan of your internal low beam optics, leading to burnt projectors, reducing how effective they can reflect light.
Here's a link to to get an idea. Personally I would just snip the old connector off and crimp an h9 connector harness to it instead of placing spade connectors in the OEM H11b and risk losing connection while driving. https://www.gencoupe.com/threads/diy-h11b-to-h11-conversion.96522/?fbclid=Iwb21leAPNWatjbGNrA81ZpWV4dG4DYWVtAjExAHNydGMGYXBwX2lkDDM1MDY4NTUzMTcyOAABHk3625c13GZ3etoJGE02AqAHX054_TMofYue4UNr7lDtBEnRIRV-Z9qHbUgx_aem_LHzeY2-jYaVdsTaHhRFDjQ
