Alternator/charging questions

Well, I charged the battery and it seems to be holding a charge. Alt was checked out too. I put a multimeter on the alt and then the battery and found less than 1/10th of a voltage drop. also no draw on the system, but while checking things, I had the multimeter attached to the battery where I could see it from inside the car, and it was reading 1 volt higher than the autometer volt gauge on the dash. I hooked the multimeter to the same place the gauge was hooked and it read the same lower number.So the question is, Where is the best location for the positive wire from the volt gauge? Thanks