No electical power!!??

[vds89]

Hi I have a 91 s13 coupe I recently changed my alternator because it was going out and also put in a new battery and everything was woking fine, it has now been about 2 weeks or so and today in the morning when I started my car it turned no problems and I parked it... but later on the day when i was leaving to work I tried starting my car and I notice there was no power at all.. my accesory lights where very low and all my car was doing was barely clicking over, so i had to jump it. I do not know what other answer can solve my question I have tried searching but yet nothing. I do not know what else to check? what to look for? any suggestions??

[nlzmo400r]

make sure all of your connections are secure to your batter and that you didn't just happen to leave some light on or something that might have drained the battery, if you have an safc, check the battery voltage frequently.

-Chris