For checking the links, you are better off using a spare light bulb, like a brake light bulb. One end to the battery - or frame, the other to each end of each link, in turn. A volt meter is good, and all, but a bad link with a high resistance connection can show as good with no load. The lamp test is the load. Even better, check volts while the lamp is lit.
You cannot test amps unless you put the meter in series with whatever load you are testing, and many loads in cars are way too high for typical amp meters, so you really want to know what you are doing before you do that, or you will need a new meter, or worse.