Why would my check engine light came on after I replaced my battery lights on my radio & clock are dim, sometimes there fine.I plugged an OEM meter in it's givingt he code p1633 What could this mean?

You can use a code reader to reset the light. You can pull the fuse for the ecm or you can unhook the battery.. Note on the battery method, you loose programming on clock, radio etc.

check your alternator. To do that take a volt meter and check the voltage in the battery with the engine NOT running. It should be around 14 volts... but for the sake of testing lets say it is 12.5 volts. Now start the engine and check the batter voltage again. If it is lower than 12.5... The alternator is shot

Might need to check the main circuits for a blown fuse or fuseable link.
There is a fuse wire between the alternator and battery.

have the alternator checked. if the alternator is not charging the vehicle is only supplied with what power is stored in the battery. once the battery is dead there is nothing to charge it

Hi,
Did the engine stops?
Sounds like your battery died and the alternator stop charging the battery?
Did you try to restart the engine?
Give us more details please.
thanks for asking FixYa!

Hi:

I am not sure if everything is related, but here are a few suggestions:

Have an auto parts store download your code from the service engile light,and see what system it is pointing too. They usually will do this for free.

Your speedometer is driven off a speed sensor, in the top of the transmission.

not sure about your clock dimming, but I would have your new alternator checked out, too, and make sure it is still charging as it should.

sometimes when you buy cheap remanufactured parts you get rough running and dimming lights from voltage fluxuations.i always had good luck with new parts or factory stuff from low mileage wrecks.

Well if lights are not staying on then you have a draw of power somewhere. Easy way to find out is volt meter. You take off negative cable and put one end of meter to battery post and other to wire dont let the wire touch post or anyother metal of vehicle. Then go through your fuse box and pull fuse's one at a time until you see voltage on meter drop. Meter should should a (-)negative voltage at start and get smaller when right fuse is pulled take notes and pull all one at a time and replace back in orginal spot. If you find one that really lowers the negative voltage draw on meter good chance you found where problem is. Id start by checking all interior lights first, including glovebox.

recheck your body ground may have surface rust on bolt, body, or connection

CHECK BATTERY VOLTAGE. IT SHOULD BE 12.5 VOLTS. IF NOT CHARGE BATTERY HAVE IT LOAD TESTED FOR DEAD CELLS. MAKE SURE BATTERY CABLES IS CLEAN AND TIGHT. FREE FROM CORROSSION. NOW IF BATTERY CABLES IS THE ORIGINAL CABLES. REPLACE THEM. NOW CHECK THE ALTERNATOR OUTPUT. USING A DIGITAL VOLT METER.IT SHOULD BE 13.5 TO 14.5 VOLTS.WITH CAR RUNNING IF NOT REMOVE ALTERNATOR HAVE IT CHECKED OUT AT AUTO ZONE OR ADVANCE AUTO PARTS .BESURE TO TURN OFF RADIO.BEFORE REMOVING NEGATIVE BATTERY CABLE.BECAUSE IF YOU DONT.YOU WILL LOSE RADIO CODE.AND RADIO WONT PLAY WHEN YOU TURN IT ON.