I think you should be able to use a 5-pin motherboard header. Probably can pick up at a local Fry's Electronics or get it from Amazon
https://www.amazon.com/StarTech-com...=1514411752&sr=8-4&keywords=5+pin+motherboard
With that header, you should be able to cut the wires and more easily check the voltage with a volt meter. Hopefully you'll find something around 12V, but if I remember correctly, the Blackview dash cam can handle higher voltage (up to 24V?) so hopefully something will work out.
Would this connector fit?? The input isn't flat.