too much voltage after adding headlight relays

haven't posted in a while and I replaced the ignition switch and I thought all was well now the issue is when I start the car it is at 15.2v but it doesn't climb with rpm or anything like that, after the car gets warm and runs for about 10min the volts go down to about 14.6 and stay there still no climbing in voltage with rpm. is this a sign of something going bad or am I still missing something?