I picked up my car from having the upper control arms changed on Friday which means the coolant tank has to come out and perhaps the fuse box. On Sunday I drove 100 miles to the track to visit and watch. Arrived and the car wouldn't idle smooth, the windows wouldn't roll down, air stopped working, ESP/BAS and battery lights came on. Turned the car off and it wouldn't restart. Relaxing day at the track ruined. I figured the battery (newish) decided to pass away. After a while I got a jump and hit the road. I got about 10 miles and the car went to idle, no throttle, no electric windows, air shut off, a bunch of lights lit up, etc. After a few minutes on the side of the road a friend happened along and we swapped his Odyssey battery into my car and my full size battery went into his. I made it about 45 minutes and the car crapped out on me. We swapped my full size battery back into my car and his small one into his. This time I drove with the radio off, air off, etc. and make it home on the charge the battery took from my friends .. cough … Mustang. So, it appears one of 2 things has happened. My alternator died or the shop left a connection off or loose. Today I found my multimeter that I haven't used in 10 years and the battery shows 12.6 volts. Started the car and at idle 12.5 volts so no charge is arriving from the alternator. The guidance I need is how to verify, where to connect the meter, without removing the alternator. I hate all things electrical and am ignorant about them as well so be understanding, please. BTW, no trouble codes to read.

Les