User manual for Black-Vue B-124 can be found here:do you have any manual for this Battery ?
https://www.blackvue.com/downloads/power-magic-ultra-battery-b-124-manual/
This manual do not contain information about connecting camera to power bank using hardwire cable. It can be done in two ways:
1)using genuine Black Vue Dashcam hardwiring power cable (3 wired) (photo below)
2)using DIY cables. Parts number of molex components are as follow:
430300007 crimp terminal
797580010 crimp terminal with 300mm 20 AWG cable
436450400 crimp housing
In both cases genuine cable / DIY cable is connected to the hardwire kit. While driving camera will record in normal mode. While parked camera will work in parking mode. Black Vue B-124 have 4-PIN dashcam port. On ACC Pin power appears while battery is charging. It's kind of direct connection between DC IN and dashcam port. This PIN should be connected with the ACC cable on camera hardware kit. The B+ pin on power bank will be connected with BAT cable on camera hardware kit.
I installed B-124 with hardwire kit and Viofo camera in Infiniti Q50 - details about this installation you can find in thread Infiniti Q50 hardwire Viofo A129 GPS Dual
If you have more question about battery installation you are welcome to continue discussion in Infiniti Q50 hardwire Viofo A129 GPS Dual thread.
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