Does it have an amp feature on it? If it does but it is low, 10 amps or less, you can always plug an amp clamp into it..........

 It should be like any multimeter and have an AC Amp or DC Amp setting on it! Use the cables, mine has a common with a volt/amp plug in on it. Break the curcuit,  put the cables in series between a battery cable and battery, something like the amp meters in the B bodied Pontiacs, and it should measure the amps.
 If unsure of the meter, switch to a higher amp scale. Or go buy a cheapie at Cdn tire or electronics store with a higher threashold.
 Such as the attachment below without the starter and ignition switch, the alternator being the solar panel. Clear as mud?

 Carl, I was taking for granted that this tester was as old as our cars with the VU meter for goodness sakes!!! Where you have it is in 20v dc scale. You need to flip it 180 degrees to the green "A" 20 amp scale since the next lower, 2amp, may be too low of a setting incase there is more that a 2amp output from the panel! Also, move the red lead from the V/Ohm plug in to the 20 A plug in.  Clear as silt? 

That should do fine! Also, you will notice the black line on the bottom of the leads connecting the 2 plug ins together, the same for the 2 A scale. Plus the red lettering for the red lead..............Common, being black, of course.

Glad to help, as the newbie to the site ............

-- Edited by 67Poncho at 01:51, 2008-09-04