Truck won’t start.

My truck wouldn’t turn over the other day so I jumped it and tested it and the alternator needed replacing. I replaced the alternator and put a new battery in. It started up fine for the rest of that day and then this morning it was dead again. Does this sound like a wiring issue? Any thoughts or advice would be much appreciated.

Cheers.

 

Probably a really dumb question, but are all your accessories off?

I drained my battery 3 times before realizing my deck light was on. I couldn't see it because it was covered by a slide in and i never pushed the button intentionally. .. point is.. maybe it's something easy.

May be the easiest place to start looking.