Actually an Ohmmeter not hooked up to anything will read infinity. That is open. If it reads 0 that is a short or, too high resistance setting. Scale the meter to what you expect to see, 30 Ohms will require a 100 Ohms setting on some meters and 200 Ohms on others. Too big a resistance to read at 2, or 20 Ohms. Most meters are scaled 2,20,200,2K,20K, and 200K. So for a head light, 2 Ohms might work. For a sending unit 200 will be best. For continuity, wire connections, 2 Ohms would be what you want.
