I have had a new alternater and battery put in and it still want crank without being jumped. Once it starts it will start fine until it sits overnight the then same problem over again.
You have a “short” in your electrical system that is draining the battery. I suggest taking the little truck to a good mechanic and letting them troubleshoot the system for you. The mechanic will isolate the problem area and then find out what’s draining the battery. There are so many areas in the electrical system that can cause this that I won’t even hazard a guess at where it might be. Remember: Any short has the capability of causing a fire so sooner is better than later.