Installing a car radio on a car with your own hands
How to make a car amplifier with your own hands
Three diagrams of car on-board network indicators Do-it-yourself on-board network voltage meter
How to make a charger for a car battery with your own hands?
How to make a starting charger for a battery yourself?
How to make a winch with your own hands?
Homemade compressor from a car compressor
Li-Ion battery charge controller