The dashboard brakelight came on after having the

sounds like you have a bad alternator, the belt is loose or the ground was not put on correctly..

It is not a rare occurence that a starter or alternator is replaced in a vehicle, and the new or rebuilt unit used is defective. The easiest way to check your charging voltage at your battery (to determine if your alternator, although just recently replaced, is still bad), is to use a very basic voltmeter or DMM (digital multimeter). Switch to DC Volts on the meter, touch the black (common) terminal on the DMM to the black or negative battery terminal, and touch the red to the red or positive battery terminal. With your vehicle running (be careful with this!), your voltage at the battery should be in the neighborhood of 13.4 Volts - 14.6 Volts. If it is higher (like 17 volts) or lower (like 12 volts), you may still have an alternator issue! This is all assuming that the alternator and belt was installed correctly. As far as the battery light goes, the first thing I would recommend checking is the brake fluid reservoir (check your owner's manual if you are unsure how to locate it- they have pictures), if the fluid is a bit on the low side, try filling it just a bit to see if the light goes out. A low fluid level may indicate a leak in the hydraulic brake system, or it may indicate that you need your brakes serviced. Sometimes there is no major issue, and the level is simply just a bit too low! All you need to do is fill the reservoir just a bit to get the light to go out. Be careful not to dismiss this problem as a quick fix, you want to make sure that the vehicle does not need brakes or does not have a leak in the system as this is a safety hazard! Try these few things and feel free to get back to me and let me know how it works out for you.