Hi guys.
Some time ago bought these Voltmeters ( http://www.ebay.com/itm/310862159064?var=610236090264&ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649 ) from Ebay. Finally, received them yesterday.
Have been testing them on a Sapphire HD5770 Vapor-X, but only got "1V" readings, no fluctuation from there (static 1V). On testing points the DMM shows 1.28V.
Have I connected something wrong? Tested more that 1 voltmeter and the result is the same
Black (Ground)
Red (12V)
White (Measurement)
Thanks for reading .