I had a burnt-out Diagnostic Adapter ELM327 lying around and I decided to make an additional power supply out of it for the car navigator as everything constantly pops out of the cigarette lighter on the go.
We remove the motherboard by breaking off.
Here is such a converter, I, too, was lying around. It has two outputs 5V 3A.
We insert it inside and solder the plus to the 16th leg and the minus to the 5th leg.
We insert the converter into the diagnostic connector and connect our gadgets.
Thank you all for your attention.