[Chevelle-List] low volts part 3

[vmckague]

Well I put a volt meter on the battery with the motor running at a fast idle and had 14.8 volts. With  the blower fan, head lights and wipers on I still had over 14 volts. Is this OK. The volt meter in the car started at 12 volts at high idle and as more acc. were added it went down. to around 11 volts. I guess my volt meter in the car is not reading correctly or could it be hooked up the wrong way? I had a friend hook this up for me so I don't really know what it is hooked up to. Is it possible to have it hooked  up backward? Thanks, Vernon