This is the best way I have this exact meter, I belive this is the best diagnostic/trouble shooting tool for any electrical problem! I paid about $280 for mine on ebay. You can buy one like this at like autozone, that would be suffincet for someone like yourself plus from autozone you can get one for like $40-$50. Also project89sho is exactly right and that holds true for most vehiles you should never have a reading of more than 50 mA's.
-Jeff-
