Starting issue!

[mateo1279]

Here's the deal-

I have had this issue come up a few times:

I start my truck and drive it, say, to the store. I come out to start it. Turn the key and... nothing. No click. Engine doesn't turn. Nothing. I then proceed to get pissed. Then wait . Then try again... Then as I am thinking I need a tow I try again, a few hours later and wal-la, it starts right up. This has happened about 4 times in the last year. The one variable that stands out is when this happens I have a load in the back, though not very heavy. It must be related to the electrical/starting system, I just can't figure out where. It can't be the battry charge. It can't be the alternator. I don't see how it could be the physical wires... could it be the starter? I am stumped!

Thanks for the help!

-Matt