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That's great, let me know if/when you can send them and I'll paypal the cost to you. my email is email@example.com
You could use a step down regulator to step down the 5V to 3.7 like this:https://www.ebay.com/itm/DC-DC-Buck-Step-Down-Conv...Also, consider wiring in a female micro usb so you can plug/unplug rather than hard wire
Do you have another source for the 2 connectors:Yazaki YESC 2.8mm Female Sealed 18-16ga TerminalMolex MX150 Female Unsealed 20-18ga TerminalThey are almost $27 with shipping from your source, maybe you have some leftover I could buy?
Does this flash (1-4 times) like the factory light
These LED's from ebay should work without a current driver. They are 12Vhttps://www.ebay.com/itm/1Pair-Green-80MM-COB-LED-Angel-Eyes-Headlight-Halo-Ring-Warning-Lights-12V-DC/262670059781?epid=1591190593&hash=item3d285b0905:g:UXsAAOSwYIxX~Z3k&vxp=mtr
Super simple high power LED driver
PIR Motion Sensor Tutorial
Easy variable voltage power supply