Something is seriously wrong with my voltage I changed the alternator and have a brand new red top ultimia battery but for some reason my battery voltage is low when I turn the ac is on. If I have my radio is on and I punch it the speakers go and it will remain off until I put in neutral and drive over again it will come on. Is there a ground that could be causing this or anything I can do to check for it. I know this won't get a lot of post but I really need help even if its telling me a specialty mechanic I could take it too

 

Start by checking the grounds on the engine and chassis. If you wouldn't have just changed the alternator I would have suggested a bad regulator but I guess that can't be the issue....

 

Check all your connections for corrosion or broken wires. Could be either on the ground side or on the power side of things.

 

Where did you get the alternator??? New or reman??? Has been known to get a bad one new..... Whats the voltage at the battery when idling???

 

At idle its in caution and when you start to drive it it barely comes out of the yellow. The alternator is a reman and I have changed it twice already. Do you guys a a diagram of all the grounds and power conections. And don't know if this has to do anything but my driverside window doesn't come done by its self when you hold it either

 

Use a multi-meter/volt-meter at the battery, with the idle at normal and take a reading.... Should be around 13.8~14.2 volts......

 

I think I found the problem I took out the stock amp and and wired the speakers to the tweeter wires just temporary until I can get a new amp but since I did that the voltage is normal and the speakers don't cut out anymore go figure that something so insignificant can do damage

 

Electrical can get screwed up VERY easy if you don't know what you're doing...