Gadget
It doesn't have instructions on how to properly connect to the battery and to the engine block somewhere on the instrument?

eire_devil
depends on the style. if its the type with the large alligator clips, simply clip pos to pos on the battery and neg to neg ont he battery, switch it on and start the car. the other type plugs into the cigarette lighter outlet. again, plug it in, switch it on and start the car.

tommmytee
You will never start your car with an air compressor. Call for help.

oIo
You need another car and connect both batteries with the same sign - & + and start you car when the other car engine is running!!

Rick J
Connect the leads to the respective battery trminals i.e. red - red black - black. Wait for about 10 mins for the slave battery to charge the dud one then try the ignition switch. Good Luck

skeptron
just connect the posivite pole with the positive pole of the other battery and same with the negative pole. try hiting the keys