I dunno where you're at (I'm in So.Cal.) but Harbor Freight has stores all across America (is this a great country er whut ?) PLUS online ordering .

I'm still using a 35 year old Radio Shack cheapo analog meter when I'm in a hurry , I vastly prefer using good SUN test equipt. or my Bekmann meter but you _MUST_ use an analog meter when trouble shooting starters and doing load tests and the fancy-schmancy digital ones go all wonky under load and stop working altogether if the votage drops below 10 volts...

Try to turn the alternator fan by hand ~ it should be tough to rotate , if it's easy it's time to re-adjust the fan belt.... I hadda do mine on my old '79 300CD to-day as I was doing routne oil change and fuel system mtce., I changed the alt. (55 A unit) and belt in Pecos , Tx. a week and 3,500 miles ago...

A tiny bit of belt slip will cause serious low charging .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better